YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.01635e+01 1.73004e-01 128 2000 3 2.36772e+01 9.00707e-01 621 2000 4 2.47918e+01 6.56116e-01 718 2000 5 2.68427e+01 1.20182e+00 802 2000 6 2.91611e+01 6.91962e-01 446 2000 7 2.96402e+01 1.92222e+00 392 2000 8 3.01234e+01 8.72922e-01 356 2000 9 2.95585e+01 1.07315e+00 296 2000 10 2.63951e+01 1.60911e+00 1024 2000 11 2.39867e+01 1.00439e+00 860 2000 12 2.06018e+01 9.86858e-01 644 2001 1 1.74660e+01 9.19325e-01 309 2001 2 2.01967e+01 1.17856e+00 573 2001 3 2.28308e+01 5.72766e-01 642 2001 4 2.53172e+01 1.16276e+00 656 2001 5 2.52025e+01 1.03170e+00 408 2001 6 2.92379e+01 4.12178e-01 320 2001 7 2.95528e+01 5.56033e-01 384 2001 8 2.87872e+01 2.20509e+00 516 2001 9 2.81632e+01 1.15294e+00 429 2001 10 2.77191e+01 6.92287e-01 481 2001 11 2.31150e+01 4.68998e-01 787 2001 12 2.34328e+01 9.08324e-01 766 2002 1 2.13014e+01 1.12067e+00 651 2002 2 2.19859e+01 3.30610e-01 194 2002 3 2.16501e+01 1.77308e+00 400 2002 4 2.64195e+01 1.00991e+00 752 2002 5 2.77236e+01 5.28695e-01 692 2002 6 2.77783e+01 1.09623e+00 180 2002 7 2.98817e+01 1.11095e+00 1997 2002 8 3.01148e+01 7.76000e-01 1787 2002 9 2.94246e+01 1.03125e+00 1446 2002 10 2.88655e+01 8.67956e-01 3517 2002 11 2.54817e+01 2.51647e+00 2760 2002 12 2.08911e+01 1.19202e+00 2260 2003 1 1.76256e+01 1.26432e+00 2436 2003 2 1.95821e+01 1.62390e+00 2106 2003 3 2.46693e+01 1.24885e+00 2315 2003 4 2.42203e+01 8.58431e-01 2744 2003 5 2.80551e+01 1.38516e+00 2980 2003 6 2.97712e+01 8.96021e-01 1135 2003 7 2.96774e+01 1.09739e+00 1818 2003 8 3.03923e+01 1.11344e+00 1565 2003 9 2.97783e+01 6.46616e-01 1577 2003 10 2.81004e+01 1.08943e+00 3101 2003 11 2.47153e+01 1.02912e+00 3023 2003 12 2.00544e+01 1.56409e+00 2158 2004 1 1.90707e+01 6.78061e-01 2896 2004 2 1.96253e+01 8.78603e-01 1919 2004 3 2.18559e+01 8.49900e-01 3184 2004 4 2.32116e+01 8.38314e-01 2896 2004 5 2.63440e+01 1.34938e+00 3228 2004 6 2.96955e+01 9.01516e-01 3254 2004 7 3.02573e+01 1.20220e+00 2210 2004 8 3.07342e+01 1.10610e+00 1870 2004 9 2.89945e+01 1.59326e+00 2091 2004 10 2.74068e+01 1.19259e+00 3075 2004 11 2.46252e+01 1.05256e+00 3338 2004 12 2.15342e+01 1.99170e+00 2146 2005 1 1.93978e+01 9.52833e-01 3093 2005 2 1.91839e+01 9.73507e-01 2693 2005 3 2.13196e+01 1.43978e+00 2365 2005 4 2.36741e+01 7.78919e-01 2912 2005 5 2.62557e+01 1.49213e+00 3115 2005 6 2.87253e+01 8.68989e-01 1420 2005 7 2.99181e+01 1.19568e+00 2568 2005 8 3.04097e+01 1.59769e+00 2107 2005 9 2.98129e+01 1.17065e+00 2664 2005 10 2.73896e+01 1.76511e+00 1930 2005 11 2.39352e+01 8.00765e-01 2782 2005 12 2.13641e+01 1.35345e+00 2741 2006 1 2.00367e+01 7.54914e-01 2655 2006 2 1.98138e+01 1.01198e+00 2471 2006 3 2.21285e+01 1.07083e+00 3583 2006 4 2.47708e+01 1.57472e+00 3567 2006 5 2.74932e+01 1.08361e+00 2682 2006 6 2.95169e+01 9.00972e-01 2340 2006 7 2.93112e+01 9.83771e-01 1683 2006 8 3.01101e+01 1.01974e+00 2141 2006 9 3.01642e+01 9.90131e-01 2941 2006 10 2.81229e+01 1.47008e+00 3144 2006 11 2.26255e+01 1.65507e+00 2405 2006 12 2.15257e+01 6.60003e-01 1793 2007 1 2.20938e+01 8.12138e-01 2718 2007 2 1.96663e+01 1.01294e+00 1876 2007 3 2.16418e+01 1.04426e+00 3173 2007 4 2.37902e+01 9.45605e-01 3191 2007 5 2.61498e+01 9.49061e-01 3401 2007 6 2.82556e+01 1.72416e+00 2550 2007 7 3.11714e+01 1.11895e+00 2018 2007 8 3.08394e+01 1.08808e+00 2640 2007 9 3.04938e+01 1.11718e+00 1807 2007 10 2.81017e+01 8.71241e-01 2219 2007 11 2.40120e+01 1.23647e+00 3631 2007 12 2.31048e+01 9.44206e-01 3573 2008 1 1.97661e+01 1.08196e+00 2361 2008 2 2.18316e+01 1.03953e+00 2583 2008 3 2.24930e+01 9.47174e-01 2900 2008 4 2.47408e+01 8.25477e-01 3849 2008 5 2.72501e+01 1.39354e+00 3762 2008 6 2.95052e+01 8.51783e-01 2807 2008 7 2.97836e+01 1.21943e+00 1990 2008 8 3.04906e+01 1.06991e+00 2284 2008 9 2.93472e+01 8.17013e-01 2309 2008 10 2.74782e+01 1.45345e+00 2280 2008 11 2.17689e+01 1.31923e+00 3719 2008 12 2.03444e+01 6.96130e-01 3471 2009 1 2.00111e+01 1.56355e+00 2956 2009 2 1.84224e+01 1.20428e+00 3239 2009 3 2.06783e+01 1.39959e+00 3087 2009 4 2.46218e+01 6.32622e-01 3675 2009 5 2.68621e+01 1.36863e+00 3379 2009 6 2.99322e+01 1.27420e+00 1822 2009 7 3.03425e+01 1.11000e+00 2437 2009 8 3.04374e+01 7.58147e-01 2904 2009 9 3.06164e+01 7.64203e-01 2051 2009 10 2.89142e+01 1.84841e+00 3059 2009 11 2.46335e+01 1.64836e+00 1860 2009 12 2.24994e+01 1.59771e+00 2189 2010 1 1.68943e+01 1.67100e+00 1756 2010 2 1.78558e+01 1.17690e+00 1442 2010 3 1.82641e+01 1.23390e+00 2064 2010 4 2.26606e+01 1.45625e+00 2131 2010 5 2.75170e+01 1.55549e+00 3677 2010 6 3.08254e+01 1.02048e+00 3041 2010 7 2.96390e+01 1.25285e+00 2306 2010 8 3.06452e+01 1.47586e+00 1637 2010 9 2.99941e+01 7.96224e-01 2197 2010 10 2.66069e+01 1.03970e+00 3686 2010 11 2.36301e+01 1.57619e+00 3323 2010 12 1.88056e+01 2.31206e+00 3344 2011 1 1.73790e+01 7.47843e-01 2577 2011 2 1.94220e+01 1.40555e+00 2837 2011 3 2.23577e+01 1.13282e+00 3944 2011 4 2.63277e+01 1.13127e+00 3992 2011 5 2.81645e+01 8.34328e-01 3372 2011 6 2.93368e+01 1.14991e+00 2247 2011 7 3.03934e+01 1.29304e+00 2471 2011 8 3.07258e+01 1.06520e+00 2047 2011 9 3.04258e+01 7.56461e-01 2343 2011 10 2.74253e+01 1.87022e+00 1735 2011 11 2.35735e+01 7.60320e-01 3403 2011 12 2.22321e+01 5.83461e-01 3452 2012 1 2.00381e+01 1.21968e+00 2917 2012 2 2.13435e+01 1.15158e+00 2287 2012 3 2.37229e+01 7.46861e-01 3903 2012 4 2.53695e+01 9.66919e-01 2874 2012 5 2.73691e+01 1.65701e+00 2518 2012 6 2.93235e+01 1.09799e+00 1646 2012 7 2.92999e+01 1.31783e+00 2131 2012 8 3.04511e+01 1.37281e+00 1875 2012 9 2.92798e+01 1.31713e+00 1971 2012 10 2.78534e+01 1.25846e+00 2632 2012 11 2.24108e+01 1.34138e+00 2988 2012 12 2.15746e+01 9.71828e-01 2712 2013 1 2.13978e+01 1.08244e+00 2795 2013 2 2.10306e+01 8.19688e-01 2715 2013 3 2.07785e+01 7.11922e-01 2541 2013 4 2.44789e+01 2.17604e+00 2938 2013 5 2.69662e+01 9.76334e-01 3030 2013 6 2.90234e+01 1.29730e+00 1767 2013 7 2.92769e+01 1.03735e+00 1869 2013 8 3.02612e+01 7.58721e-01 1788 2013 9 2.95607e+01 8.04170e-01 1769 2013 10 2.82139e+01 1.13514e+00 2845 2013 11 2.46578e+01 1.21885e+00 2132 2013 12 2.31197e+01 5.97872e-01 2615 2014 1 2.01670e+01 1.64585e+00 1824 2014 2 2.18662e+01 1.09892e+00 2993 2014 3 2.37174e+01 6.66216e-01 3208 2014 4 2.49964e+01 1.17981e+00 2681 2014 5 2.68958e+01 8.08463e-01 2793 2014 6 2.94359e+01 1.62751e+00 1966 2014 7 3.06974e+01 1.02798e+00 2300 2014 8 3.13450e+01 1.06048e+00 2437 2014 9 2.99123e+01 1.14403e+00 1818 2014 10 2.80272e+01 1.56941e+00 2421 2014 11 2.31571e+01 1.63539e+00 2502 2014 12 2.04281e+01 9.21973e-01 2507 2015 1 2.12235e+01 1.04162e+00 2603 2015 2 1.93859e+01 8.55320e-01 2781 2015 3 2.36833e+01 1.91144e+00 3504 2015 4 2.64926e+01 1.84769e+00 2958 2015 5 2.78707e+01 1.26369e+00 3249 2015 6 3.01283e+01 1.13474e+00 2197 2015 7 3.07391e+01 8.75679e-01 2191 2015 8 3.14280e+01 1.00414e+00 1982 2015 9 3.06860e+01 1.26566e+00 1778 2015 10 2.77268e+01 1.28750e+00 2549 2015 11 2.66291e+01 1.45301e+00 2927 2015 12 2.40437e+01 8.29379e-01 2384 2016 1 2.07370e+01 2.46524e+00 1028 2016 2 1.92011e+01 9.51540e-01 2158 2016 3 2.21534e+01 1.89276e+00 1491 2016 4 2.52176e+01 7.96137e-01 3037 2016 5 2.75356e+01 1.49120e+00 2794 2016 6 2.97836e+01 1.28496e+00 2298 2016 7 3.11833e+01 9.13897e-01 2189 2016 8 3.09024e+01 8.33676e-01 2166 2016 9 3.05669e+01 1.23778e+00 2123 2016 10 2.78957e+01 2.07787e+00 2483 2016 11 2.38500e+01 1.14658e+00 3737 2016 12 2.35872e+01 6.05795e-01 3199 2017 1 2.16534e+01 9.29714e-01 3020 2017 2 2.19540e+01 9.04103e-01 3116 2017 3 2.27849e+01 9.29949e-01 3772 2017 4 2.46188e+01 9.57571e-01 2243 2017 5 2.75786e+01 1.14302e+00 2857 2017 6 2.94986e+01 1.32443e+00 1646 2017 7 3.01030e+01 1.27964e+00 1732 2017 8 3.09373e+01 1.16076e+00 2561 2017 9 2.98706e+01 1.04462e+00 2193 2017 10 2.82101e+01 1.31010e+00 2112 2017 11 2.46242e+01 5.05199e-01 3695 2017 12 2.30593e+01 1.21137e+00 3615 2018 1 1.91554e+01 1.43831e+00 1751 2018 2 2.19244e+01 1.80863e+00 3179 2018 3 2.27853e+01 1.14601e+00 3748 2018 4 2.52812e+01 1.21848e+00 3493 2018 5 2.63257e+01 1.07016e+00 1265 2018 6 2.83308e+01 1.51171e+00 1667 2018 7 3.08335e+01 9.14342e-01 1840 2018 8 3.07971e+01 7.57270e-01 2331 2018 9 3.03438e+01 9.78260e-01 2005 2018 10 2.85793e+01 8.45315e-01 3321 2018 11 2.63367e+01 1.12774e+00 2613 2018 12 2.20605e+01 1.35520e+00 2258 2019 1 2.07761e+01 1.42130e+00 2939 2019 2 2.19419e+01 1.77699e+00 3067 2019 3 2.43660e+01 8.62622e-01 3360 2019 4 2.58426e+01 1.24312e+00 3337 2019 5 2.84999e+01 1.07643e+00 3492 2019 6 3.08519e+01 1.16601e+00 2316 2019 7 3.03993e+01 9.71973e-01 2138 2019 8 3.06522e+01 9.55824e-01 1682 2019 9 2.94048e+01 1.32502e+00 2805 2019 10 2.80930e+01 8.38931e-01 2892 2019 11 2.56928e+01 2.30578e+00 2956 2019 12 2.28893e+01 8.57258e-01 2602 2020 1 2.15841e+01 1.22398e+00 3358 2020 2 2.13807e+01 1.32377e+00 2984 2020 3 2.33348e+01 1.68988e+00 3841 2020 4 2.72326e+01 1.00107e+00 2813 2020 5 2.73251e+01 1.13273e+00 2299 2020 6 3.00408e+01 1.20429e+00 1955 2020 7 3.10243e+01 1.37411e+00 2150 2020 8 3.13273e+01 1.29621e+00 2002 2020 9 3.01102e+01 9.45505e-01 2308 2020 10 2.85367e+01 1.36858e+00 1694 2020 11 2.53038e+01 1.13110e+00 2685 2020 12 2.15443e+01 1.21373e+00 3375 2021 1 2.04120e+01 8.06769e-01 2357 2021 2 2.18862e+01 1.46259e+00 2963 2021 3 2.32869e+01 1.04020e+00 3411 2021 4 2.49880e+01 1.38291e+00 3388 2021 5 2.75597e+01 1.08461e+00 3141 2021 6 2.82530e+01 8.44911e-01 1175 2021 7 3.00552e+01 1.03623e+00 2786 2021 8 3.03408e+01 1.22804e+00 1711 2021 9 3.04256e+01 1.02456e+00 2357 2021 10 2.91915e+01 9.16424e-01 2612 2021 11 2.35453e+01 1.27149e+00 2658 2021 12 2.28587e+01 6.33688e-01 3555 2022 1 2.20784e+01 1.38504e+00 2362 2022 2 2.04233e+01 1.45636e+00 2714 2022 3 2.39124e+01 1.17851e+00 3816 2022 4 2.55034e+01 9.72565e-01 1883 2022 5 2.82239e+01 1.00545e+00 3048 2022 6 2.94730e+01 1.25638e+00 2487 2022 7 3.02400e+01 8.98571e-01 2530 2022 8 3.06574e+01 8.46317e-01 2074 2022 9 3.08470e+01 1.29957e+00 2408 2022 10 2.69359e+01 1.02224e+00 2806 2022 11 2.58892e+01 9.31319e-01 2769 2022 12 2.37699e+01 1.73420e+00 2850 2023 1 2.05664e+01 8.84451e-01 3335 2023 2 2.28711e+01 1.28689e+00 3685 2023 3 2.49985e+01 8.63138e-01 3971 2023 4 2.69214e+01 9.54966e-01 2389 2023 5 2.88901e+01 1.22599e+00 3505 2023 6 3.04563e+01 9.63186e-01 2429 2023 7 3.19417e+01 1.20607e+00 2074 2023 8 3.18104e+01 1.09891e+00 2626 2023 9 3.13224e+01 8.56235e-01 2545 2023 10 2.79438e+01 1.67191e+00 2888 2023 11 2.49916e+01 8.60346e-01 2655 2023 12 2.13552e+01 1.67548e+00 1241 2024 1 2.02839e+01 1.01642e+00 1302 2024 2 2.01299e+01 7.17466e-01 2687 2024 3 2.39850e+01 1.24680e+00 2229 2024 4 2.41668e+01 7.79732e-01 382