Mar 28, 202388.480.040.05%88.4488.5788.09
Mar 27, 202388.42-0.16-0.18%88.5888.6988.09
Mar 24, 202388.130.640.73%87.4988.1386.95
Mar 23, 202387.90-0.55-0.63%88.4589.1987.36
Mar 22, 202387.65-1.22-1.39%88.8789.6387.61
Mar 21, 202388.650.270.30%88.3888.7187.99
Mar 20, 202387.460.430.49%87.0387.6086.76
Mar 17, 202386.64-0.56-0.65%87.2087.4586.25
Mar 16, 202387.541.822.08%85.7287.5785.53
Mar 15, 202386.110.620.72%85.4986.1784.97
Mar 14, 202387.370.180.21%87.1987.6586.51
Mar 13, 202386.210.610.71%85.6087.0885.32
Mar 10, 202386.41-1.07-1.24%87.4887.8386.14
Mar 09, 202387.54-1.54-1.76%89.0889.3887.36
Mar 08, 202388.960.070.08%88.8989.2188.54
Mar 07, 202388.77-1.37-1.54%90.1490.1588.63
Mar 06, 202390.21-0.14-0.16%90.3590.7690.10
Mar 03, 202390.250.860.95%89.3990.3389.19
Mar 02, 202388.920.961.08%87.9689.1087.87
Mar 01, 202388.47-0.15-0.17%88.6288.8488.15
Feb 28, 202388.28-0.30-0.34%88.5888.8488.28
Feb 27, 202388.71-0.49-0.55%89.2089.2788.53
Feb 24, 202388.210.170.19%88.0488.3287.68
Feb 23, 202389.38-0.25-0.28%89.6389.6888.50
Feb 22, 202388.94-0.28-0.31%89.2289.4788.66
Feb 21, 202389.19-0.78-0.87%89.9790.1689.12
Feb 17, 202390.750.290.32%90.4690.7890.08
Feb 16, 202390.99-0.13-0.14%91.1291.8290.79
Feb 15, 202391.910.800.87%91.1191.9190.95
Feb 14, 202391.840.420.46%91.4292.3390.99
Feb 13, 202391.780.740.81%91.0491.8590.86
Feb 10, 202390.830.120.13%90.7190.9290.32
Feb 09, 202390.92-1.46-1.61%92.3892.4090.63
Feb 08, 202391.33-0.72-0.79%92.0592.0591.17
Feb 07, 202392.121.181.28%90.9492.2990.62
Feb 06, 202391.160.010.01%91.1591.3790.69
Feb 03, 202391.920.030.03%91.8992.8291.65
Feb 02, 202392.960.040.04%92.9293.2692.24
Feb 01, 202392.231.061.15%91.1792.7590.45
Jan 31, 202391.291.041.14%90.2591.3090.10
Jan 30, 202390.29-0.48-0.53%90.7791.2190.26
Jan 27, 202391.420.350.38%91.0791.8390.94
Jan 26, 202391.350.220.24%91.1391.4090.43
Jan 25, 202390.600.700.77%89.9090.6689.26
Jan 24, 202390.400.260.29%90.1490.5489.80
Jan 23, 202390.500.750.83%89.7590.8089.58
Jan 20, 202389.671.111.24%88.5689.7188.21
Jan 19, 202388.27-0.05-0.06%88.3288.7187.90
Jan 18, 202388.68-1.64-1.85%90.3290.3888.64
Jan 17, 202389.69-0.28-0.31%89.9790.1289.49
Jan 13, 202389.730.971.08%88.7689.8088.75
Jan 12, 202389.320.170.19%89.1589.5688.13
Jan 11, 202388.680.480.54%88.2088.7187.92
Jan 10, 202387.770.550.63%87.2287.7986.94
Jan 09, 202387.29-0.50-0.57%87.7988.3687.25
Jan 06, 202387.111.271.46%85.8487.2785.14
Jan 05, 202385.13-0.33-0.39%85.4685.5484.95
Jan 04, 202386.020.170.20%85.8586.3185.14
Jan 03, 202384.94-0.70-0.82%85.6486.0684.41
Dec 30, 202284.920.060.07%84.8685.1184.34
Dec 29, 202285.460.660.77%84.8085.6084.63
Dec 28, 202284.01-1.17-1.39%85.1885.4183.96
Dec 27, 202285.05-0.21-0.25%85.2685.3884.71
Dec 23, 202285.080.530.62%84.5585.0984.20
Dec 22, 202284.72-0.49-0.58%85.2185.2583.62
Dec 21, 202285.750.580.68%85.1785.9685.00
Dec 20, 202284.620.250.30%84.3784.9884.12
Dec 19, 202284.44-0.71-0.84%85.1585.2084.12
Dec 16, 202284.96-0.34-0.40%85.3085.5684.56
Dec 15, 202285.81-1.12-1.31%86.9387.1085.43
Dec 14, 202287.96-0.47-0.53%88.4389.2087.32
Dec 13, 202288.29-1.70-1.93%89.9989.9987.82
Dec 12, 202288.150.580.66%87.5788.1687.24
Dec 09, 202287.37-0.36-0.41%87.7388.5287.34
Dec 08, 202287.790.270.31%87.5287.9887.18
Dec 07, 202287.100.020.02%87.0887.5886.90
Dec 06, 202287.28-1.04-1.19%88.3288.3986.86
Dec 05, 202288.24-1.09-1.24%89.3389.4287.94
Dec 02, 202289.770.961.07%88.8189.9988.81
Dec 01, 202289.84-0.30-0.33%90.1490.4389.32
Nov 30, 202289.641.872.09%87.7789.6787.09
Nov 29, 202287.24-0.15-0.17%87.3987.6686.87
Nov 28, 202287.04-0.86-0.99%87.9088.0886.90
Nov 25, 202288.320.090.10%88.2388.4288.10
Nov 23, 202288.250.650.74%87.6088.3787.59
Nov 22, 202287.590.670.76%86.9287.6086.62
Nov 21, 202286.48-0.02-0.02%86.5086.6886.06
Nov 18, 202287.01-0.55-0.63%87.5687.5686.46
Nov 17, 202286.800.360.41%86.4486.8885.83
Nov 16, 202286.99-0.41-0.47%87.4087.5586.85
Nov 15, 202287.66-0.69-0.79%88.3588.5386.88
Nov 14, 202286.81-0.40-0.46%87.2187.7586.77
Nov 11, 202287.580.500.57%87.0887.7686.49
Nov 10, 202286.351.301.51%85.0586.3884.51
Nov 09, 202281.92-1.10-1.34%83.0283.2881.84
Nov 08, 202283.490.130.16%83.3684.0882.69
Nov 07, 202282.890.030.04%82.8683.0682.20
Nov 04, 202282.340.010.01%82.3382.7381.09
Nov 03, 202280.470.110.14%80.3681.0079.88
Nov 02, 202281.16-1.70-2.09%82.8683.8781.15
Nov 01, 202282.88-1.14-1.38%84.0284.0382.61
Oct 31, 202282.780.050.06%82.7383.1182.53
Oct 28, 202283.351.441.73%81.9183.4481.81
Oct 27, 202282.05-0.57-0.69%82.6283.0881.92
Oct 26, 202282.530.400.48%82.1383.4682.10
Oct 25, 202282.571.271.54%81.3082.6181.27
Oct 24, 202281.100.300.37%80.8081.3480.04
Oct 21, 202280.931.942.40%78.9980.9578.64
Oct 20, 202279.23-0.38-0.48%79.6180.6079.01
Oct 19, 202279.59-0.19-0.24%79.7880.2879.00
Oct 18, 202280.38-0.85-1.06%81.2381.2879.65
Oct 17, 202279.610.420.53%79.1979.8779.17
Oct 14, 202277.68-2.23-2.87%79.9180.0977.53
Oct 13, 202279.313.364.24%75.9579.5975.71
Oct 12, 202277.55-0.27-0.35%77.8278.1177.40
Oct 11, 202277.78-0.24-0.31%78.0278.9077.37
Oct 10, 202278.42-0.80-1.02%79.2279.2577.94
Oct 07, 202279.08-1.26-1.59%80.3480.4478.72
Oct 06, 202281.12-0.53-0.65%81.6582.1780.99
Oct 05, 202282.100.630.77%81.4782.5280.86
Oct 04, 202282.410.941.14%81.4782.4481.24
Oct 03, 202279.711.001.25%78.7180.0878.28
Sep 30, 202277.94-0.60-0.77%78.5479.3777.80
Sep 29, 202278.74-0.66-0.84%79.4079.4078.04
Sep 28, 202280.191.371.71%78.8280.4978.39
Sep 27, 202278.65-0.95-1.21%79.6080.0378.12
Sep 26, 202278.87-0.57-0.72%79.4480.0878.58
Sep 23, 202279.84-0.60-0.75%80.4480.4778.94
Sep 22, 202281.54-0.72-0.88%82.2682.3681.32
Sep 21, 202282.16-1.65-2.01%83.8184.4282.14
Sep 20, 202283.53-0.30-0.36%83.8383.9682.98
Sep 19, 202284.591.331.57%83.2684.5983.26
Sep 16, 202284.020.120.14%83.9084.2183.41
Sep 15, 202284.79-0.49-0.58%85.2885.8684.52
Sep 14, 202285.67-0.03-0.04%85.7085.9785.01
Sep 13, 202285.33-1.73-2.03%87.0687.2085.10
Sep 12, 202288.830.160.18%88.6789.0188.35
Sep 09, 202287.780.430.49%87.3587.9187.01
Sep 08, 202286.170.901.04%85.2786.2584.91
Sep 07, 202285.801.531.78%84.2785.9084.23
Sep 06, 202284.53-0.70-0.83%85.2385.3384.16
Sep 02, 202284.98-1.50-1.77%86.4886.7584.61
Sep 01, 202285.730.460.54%85.2785.7584.50
Aug 31, 202285.97-1.08-1.26%87.0587.1385.93
Aug 30, 202286.51-1.36-1.57%87.8787.8786.10
Aug 29, 202287.39-0.02-0.02%87.4188.0187.17
Aug 26, 202287.93-2.85-3.24%90.7890.7987.90
Aug 25, 202290.590.810.89%89.7890.6389.53
Aug 24, 202289.300.190.21%89.1189.6388.78
Aug 23, 202289.07-0.19-0.21%89.2689.7388.95
Aug 22, 202289.17-0.65-0.73%89.8289.8288.94
Aug 19, 202290.80-0.79-0.87%91.5991.5990.59
Aug 18, 202292.07-0.04-0.04%92.1192.2191.70
Aug 17, 202292.08-0.05-0.05%92.1392.6491.59
Aug 16, 202292.740.300.32%92.4493.0992.24
Aug 15, 202292.660.540.58%92.1292.7692.07
Aug 12, 202292.660.790.85%91.8792.6891.52
Aug 11, 202291.42-0.78-0.85%92.2092.4591.25
Aug 10, 202291.400.220.24%91.1891.4390.75
Aug 09, 202289.48-0.38-0.42%89.8689.9289.27
Aug 08, 202289.90-0.52-0.58%90.4290.8489.71
Aug 05, 202289.910.570.63%89.3490.0289.12
Aug 04, 202290.16-0.10-0.11%90.2690.3189.75
Aug 03, 202289.980.450.50%89.5390.1789.10
Aug 02, 202288.90-0.27-0.30%89.1789.8788.64
Aug 01, 202289.560.000.00%89.5690.1089.08
Jul 29, 202289.820.790.88%89.0389.9088.64
Jul 28, 202288.720.610.69%88.1188.8487.20
Jul 27, 202287.921.271.44%86.6588.1786.48
Jul 26, 202285.77-0.73-0.85%86.5086.5185.64
Jul 25, 202286.86-0.05-0.06%86.9186.9886.41
Jul 22, 202286.56-0.86-0.99%87.4287.7486.13
Jul 21, 202287.320.941.08%86.3887.3285.96
Jul 20, 202286.430.090.10%86.3486.7485.81
Jul 19, 202286.140.830.96%85.3186.2584.95
Jul 18, 202283.99-1.25-1.49%85.2485.3683.77
Jul 15, 202284.210.500.59%83.7184.2683.17
Jul 14, 202282.860.670.81%82.1982.9581.50
Jul 13, 202283.440.790.95%82.6583.9882.46
Jul 12, 202283.75-0.45-0.54%84.2084.5783.39
Jul 11, 202284.29-1.73-2.05%86.0286.0284.12
Jul 08, 202285.520.260.30%85.2685.9384.84
Jul 07, 202285.530.580.68%84.9585.6984.81
Jul 06, 202284.220.130.15%84.0984.6383.45
Jul 05, 202284.101.051.25%83.0584.1282.42
Jul 01, 202284.561.031.22%83.5384.5882.95
Jun 30, 202289.706.076.77%83.6389.7082.80
Jun 29, 202284.63-0.30-0.35%84.9385.0984.28
Jun 28, 202284.82-1.86-2.19%86.6887.0984.77
Jun 27, 202286.10-0.55-0.64%86.6586.6585.90
Jun 24, 202286.361.441.67%84.9286.3684.67
Jun 23, 202283.840.190.23%83.6583.9582.79
Jun 22, 202283.350.480.58%82.8784.1782.60
Jun 21, 202283.800.210.25%83.5984.1383.36
Jun 17, 202282.00-0.22-0.27%82.2282.7381.27
Jun 16, 202282.03-0.71-0.87%82.7482.7481.48
Jun 15, 202284.540.590.70%83.9585.3882.91
Jun 14, 202283.19-0.72-0.87%83.9184.0882.49
Jun 13, 202283.45-1.01-1.21%84.4684.8183.15
Jun 10, 202286.65-0.98-1.13%87.6387.7486.54
Jun 09, 202288.99-1.62-1.82%90.6190.9988.97
Jun 08, 202291.94-0.43-0.47%92.3792.7891.76
Jun 07, 202292.841.501.62%91.3492.9091.22
Jun 06, 202292.15-0.75-0.81%92.9093.1491.89
Jun 03, 202291.78-0.45-0.49%92.2392.5391.59
Jun 02, 202293.331.641.76%91.6993.3591.31
Jun 01, 202291.48-1.26-1.38%92.7492.9590.97
May 31, 202292.24-0.35-0.38%92.5992.9691.83
May 27, 202292.611.111.20%91.5092.6191.33
May 26, 202290.731.321.45%89.4191.0989.40
May 25, 202289.210.901.01%88.3189.6688.24
May 24, 202288.670.130.15%88.5488.9087.43
May 23, 202289.360.640.72%88.7289.5688.21
May 20, 202287.96-0.74-0.84%88.7088.7986.22
May 19, 202287.750.480.55%87.2788.5686.97
May 18, 202287.65-2.09-2.38%89.7489.8987.38
May 17, 202290.700.260.29%90.4490.7089.60
May 16, 202288.900.120.13%88.7889.5888.32
May 13, 202289.151.091.22%88.0689.3687.81
May 12, 202286.890.570.66%86.3287.6385.54
May 11, 202287.00-1.10-1.26%88.1089.2786.85
May 10, 202288.11-1.13-1.28%89.2489.5087.21
May 09, 202287.87-1.40-1.59%89.2789.4987.49
May 06, 202290.72-0.17-0.19%90.8991.4689.72
May 05, 202291.51-2.19-2.39%93.7093.7290.68
May 04, 202294.882.312.43%92.5795.0091.76
May 03, 202292.610.230.25%92.3893.0092.02
May 02, 202292.050.310.34%91.7492.3790.33
Apr 29, 202291.73-2.29-2.50%94.0294.5291.68
Apr 28, 202294.251.061.12%93.1994.5992.20
Apr 27, 202292.280.050.05%92.2393.2591.73
Apr 26, 202291.93-1.99-2.16%93.9293.9891.93
Apr 25, 202294.570.940.99%93.6394.6092.78
Apr 22, 202294.42-2.08-2.20%96.5096.5094.30
Apr 21, 202296.62-2.25-2.33%98.8799.1196.40
Apr 20, 202298.06-0.52-0.53%98.5898.6397.81
Apr 19, 202298.061.231.25%96.8398.1696.64
Apr 18, 202296.95-0.01-0.01%96.9697.4296.56
Apr 14, 202297.18-1.08-1.11%98.2698.4497.13
Apr 13, 202298.240.970.99%97.2798.3597.01
Apr 12, 202297.03-1.16-1.20%98.1998.5196.74
Apr 11, 202297.52-0.78-0.80%98.3098.4197.36
Apr 08, 202298.89-0.18-0.18%99.0799.5098.52
Apr 07, 202299.070.390.39%98.6899.4798.08
Apr 06, 202298.87-0.28-0.28%99.1599.3598.20
Apr 05, 2022100.01-0.99-0.99%101.00101.3999.70
Apr 04, 2022101.390.720.71%100.67101.42100.49
Apr 01, 2022100.46-0.22-0.22%100.68100.6899.69
Mar 31, 202299.98-1.15-1.15%101.13101.3299.88
Mar 30, 2022101.44-0.45-0.44%101.89101.97101.02
Mar 29, 2022101.990.210.21%101.78102.06101.14
Mar 28, 2022100.430.530.53%99.90100.4599.30
Mar 25, 2022100.030.100.10%99.93100.1299.17
Mar 24, 202299.840.620.62%99.2299.8698.80
Mar 23, 202298.66-0.48-0.49%99.1499.6098.64
Mar 22, 202299.830.570.57%99.26100.0199.13
Mar 21, 202298.62-0.23-0.23%98.8599.1197.90
Mar 18, 202299.041.621.64%97.4299.0697.18
Mar 17, 202297.791.321.35%96.4797.7996.27
Mar 16, 202296.821.381.43%95.4496.8494.40
Mar 15, 202293.761.051.12%92.7193.9492.25
Mar 14, 202292.24-0.95-1.03%93.1993.8292.03
Mar 11, 202292.87-2.02-2.18%94.8994.8992.78
Mar 10, 202294.170.390.41%93.7894.3693.24
Mar 09, 202294.970.570.60%94.4095.3093.73
Mar 08, 202292.14-0.45-0.49%92.5994.1591.54
Mar 07, 202292.32-2.56-2.77%94.8894.9392.22
Mar 04, 202295.28-0.10-0.10%95.3895.4694.37
Mar 03, 202296.67-1.32-1.37%97.9997.9996.30
Mar 02, 202297.700.450.46%97.2597.9896.43
Mar 01, 202296.29-1.28-1.33%97.5797.9695.72
Feb 28, 202297.930.710.73%97.2298.4196.81
Feb 25, 202298.601.511.53%97.0998.6496.55
Feb 24, 202296.443.323.44%93.1296.5592.89
Feb 23, 202296.05-2.24-2.33%98.2998.2995.88
Feb 22, 202297.49-0.38-0.39%97.8798.5996.69
Feb 18, 202298.59-0.77-0.78%99.3699.5598.17
Feb 17, 202299.33-1.24-1.25%100.57100.6599.19
Feb 16, 2022101.240.630.62%100.61101.52100.34
Feb 15, 2022101.020.570.56%100.45101.10100.36
Feb 14, 202299.27-0.27-0.27%99.5499.8098.54
Feb 11, 202299.76-1.83-1.83%101.59102.0599.42
Feb 10, 2022101.53-0.22-0.22%101.75103.31101.18
Feb 09, 2022103.100.510.49%102.59103.11102.52
Feb 08, 2022101.480.830.82%100.65101.67100.36
Feb 07, 2022100.78-0.24-0.24%101.02101.46100.52
Feb 04, 2022100.910.550.55%100.36101.6099.94
Feb 03, 2022100.45-0.77-0.77%101.22101.62100.29
Feb 02, 2022102.500.070.07%102.43102.65101.70
Feb 01, 2022101.760.430.42%101.33101.87100.49
Jan 31, 2022101.001.911.89%99.09101.0898.89
Jan 28, 202298.981.521.54%97.4699.0096.47
Jan 27, 202297.38-1.36-1.40%98.7499.2797.05
Jan 26, 202297.97-1.77-1.81%99.74100.2397.18
Jan 25, 202298.420.360.37%98.0699.4196.94
Jan 24, 202299.401.441.45%97.9699.4495.62
Jan 21, 202299.52-1.58-1.59%101.10101.3699.46
Jan 20, 2022101.29-1.41-1.39%102.70103.62101.21
Jan 19, 2022102.10-1.07-1.05%103.17103.45102.02
Jan 18, 2022102.70-0.56-0.55%103.26103.42102.48
Jan 14, 2022104.460.580.56%103.88104.54103.53
Jan 13, 2022104.52-1.55-1.48%106.07106.15104.30
Jan 12, 2022105.900.060.06%105.84106.12105.32
Jan 11, 2022105.231.171.11%104.06105.23103.60
Jan 10, 2022103.970.440.42%103.53104.01102.33
Jan 07, 2022104.31-0.13-0.12%104.44104.76103.79
Jan 06, 2022104.430.040.04%104.39104.99103.81
Jan 05, 2022104.53-1.78-1.70%106.31106.47104.49
Jan 04, 2022106.32-0.45-0.42%106.77106.81105.92
Jan 03, 2022106.360.220.21%106.14106.41105.56
Dec 31, 2021105.77-0.20-0.19%105.97106.24105.75
Dec 30, 2021106.01-0.20-0.19%106.21106.44105.90
Dec 29, 2021106.160.060.06%106.10106.33105.80
Dec 28, 2021106.15-0.23-0.22%106.38106.58106.06
Dec 27, 2021106.290.740.70%105.55106.29105.33
Dec 23, 2021105.130.450.43%104.68105.43104.62
Dec 22, 2021104.460.980.94%103.48104.50103.39
Dec 21, 2021103.550.980.95%102.57103.58102.24
Dec 20, 2021101.810.150.15%101.66101.89101.05
Dec 17, 2021102.76-0.24-0.23%103.00103.66102.42
Dec 16, 2021103.75-1.15-1.11%104.90105.02103.40
Dec 15, 2021104.341.271.22%103.07104.40102.44
Dec 14, 2021103.050.080.08%102.97103.48102.44
Dec 13, 2021103.63-0.78-0.75%104.41104.50103.60
Dec 10, 2021105.700.010.01%105.69105.78104.99
Dec 09, 2021105.11-0.43-0.41%105.54105.72105.06
Dec 08, 2021105.910.210.20%105.70106.01105.39
Dec 07, 2021105.630.780.74%104.85105.67104.78
Dec 06, 2021103.430.570.55%102.86103.72102.27
Dec 03, 2021102.33-1.29-1.26%103.62103.80101.50
Dec 02, 2021103.251.041.01%102.21103.61102.08
Dec 01, 2021101.80-2.44-2.40%104.24104.77101.77
Nov 30, 2021102.87-1.12-1.09%103.99104.37102.52
Nov 29, 2021104.35-0.18-0.17%104.53104.78103.79
Nov 26, 2021103.47-0.75-0.72%104.22104.45103.20
Nov 24, 2021106.000.710.67%105.29106.02105.06
Nov 23, 2021106.030.190.18%105.84106.26105.23
Nov 22, 2021105.96-0.89-0.84%106.85107.20105.92
Nov 19, 2021106.64-0.23-0.22%106.87107.09106.56
Nov 18, 2021107.020.040.04%106.98107.10106.35
Nov 17, 2021106.95-0.25-0.23%107.20107.20106.79
Nov 16, 2021107.240.240.22%107.00107.49106.95
Nov 15, 2021107.01-0.38-0.36%107.39107.39106.87
Nov 12, 2021107.080.430.40%106.65107.14106.45
Nov 11, 2021106.37-0.18-0.17%106.55106.63106.34
Nov 10, 2021106.02-0.65-0.61%106.67107.00105.72
Nov 09, 2021107.00-0.37-0.35%107.37107.43106.67
Nov 08, 2021107.27-0.09-0.08%107.36107.43107.12
Nov 05, 2021107.06-0.18-0.17%107.24107.39106.68
Nov 04, 2021106.830.140.13%106.69106.90106.44
Nov 03, 2021106.620.760.71%105.86106.70105.67
Nov 02, 2021105.930.220.21%105.71106.02105.64
Nov 01, 2021105.870.190.18%105.68105.90105.36
Oct 29, 2021105.370.470.45%104.90105.43104.83
Oct 28, 2021105.620.450.43%105.17105.65104.96
Oct 27, 2021104.69-0.54-0.52%105.23105.42104.66
Oct 26, 2021105.28-0.48-0.46%105.76105.87105.14
Oct 25, 2021105.290.190.18%105.10105.40104.66
Oct 22, 2021104.95-0.05-0.05%105.00105.33104.47
Oct 21, 2021104.900.310.30%104.59104.94104.49
Oct 20, 2021104.950.250.24%104.70105.00104.63
Oct 19, 2021104.570.350.33%104.22104.60104.10
Oct 18, 2021103.760.640.62%103.12103.78102.97
Oct 15, 2021103.640.220.21%103.42103.71103.23
Oct 14, 2021102.840.450.44%102.39102.91102.21