YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.58644e+01 4.77661e-01 70 2000 3 1.63885e+01 9.13273e-01 1054 2000 4 2.10410e+01 2.18571e+00 102 2000 5 2.46085e+01 9.73465e-01 244 2000 6 2.71380e+01 1.33800e+00 203 2000 7 3.15614e+01 1.48550e+00 743 2000 8 3.34145e+01 1.05065e+00 880 2000 9 2.98899e+01 9.19067e-01 1676 2000 10 2.78244e+01 9.30925e-01 1686 2000 11 2.30457e+01 1.36767e+00 1671 2000 12 1.97694e+01 1.11791e+00 843 2001 1 1.73907e+01 6.30648e-01 1830 2001 2 1.62570e+01 7.46948e-01 1473 2001 3 1.86530e+01 1.06507e+00 1335 2001 4 2.24320e+01 9.18099e-01 955 2001 5 2.49594e+01 1.13383e+00 762 2001 6 2.77125e+01 7.43989e-01 259 2001 7 3.12236e+01 1.15104e+00 1419 2001 8 3.29847e+01 1.06776e+00 2021 2001 9 3.15147e+01 8.21702e-01 2394 2001 10 2.93239e+01 6.50442e-01 2370 2001 11 2.54826e+01 2.61073e+00 1638 2001 12 2.01367e+01 9.13189e-01 1065 2002 1 1.77104e+01 9.45150e-01 1791 2002 2 1.66593e+01 5.22804e-01 1163 2002 3 1.86945e+01 1.14205e+00 886 2002 4 2.14140e+01 1.75675e+00 892 2002 5 2.60504e+01 1.16811e+00 1428 2002 6 2.88108e+01 1.31827e+00 1026 2002 7 3.12905e+01 8.98834e-01 3076 2002 8 3.15557e+01 8.50695e-01 4666 2002 9 3.04858e+01 9.62421e-01 4835 2002 10 2.97161e+01 1.06209e+00 4591 2002 11 2.51969e+01 1.72004e+00 3917 2002 12 1.94409e+01 1.82867e+00 2658 2003 1 1.68166e+01 5.64237e-01 2320 2003 2 1.68830e+01 7.43500e-01 2081 2003 3 1.71138e+01 9.77821e-01 1981 2003 4 2.14973e+01 2.00510e+00 1497 2003 5 2.50788e+01 1.40373e+00 2345 2003 6 2.79899e+01 1.62083e+00 1738 2003 7 2.98057e+01 1.06355e+00 2851 2003 8 3.23989e+01 9.82335e-01 4548 2003 9 3.04770e+01 1.00956e+00 4700 2003 10 2.89421e+01 7.86440e-01 5002 2003 11 2.38802e+01 2.28451e+00 3131 2003 12 2.00967e+01 1.10793e+00 2011 2004 1 1.80707e+01 5.69936e-01 2434 2004 2 1.71230e+01 1.03371e+00 2326 2004 3 1.86385e+01 1.12684e+00 2402 2004 4 2.07786e+01 1.49224e+00 2123 2004 5 2.46898e+01 1.40277e+00 2338 2004 6 2.81938e+01 1.06819e+00 1993 2004 7 3.16187e+01 1.35317e+00 4004 2004 8 3.15542e+01 8.03250e-01 4176 2004 9 3.04490e+01 1.04873e+00 4000 2004 10 2.93262e+01 1.19892e+00 4069 2004 11 2.61588e+01 1.94120e+00 2135 2004 12 1.82589e+01 1.00804e+00 2094 2005 1 1.58531e+01 9.55998e-01 2350 2005 2 1.57487e+01 8.28116e-01 1967 2005 3 1.83159e+01 1.20783e+00 2442 2005 4 2.16163e+01 2.19223e+00 2223 2005 5 2.57172e+01 2.23223e+00 2518 2005 6 2.78545e+01 1.20272e+00 1867 2005 7 3.07684e+01 1.84773e+00 1843 2005 8 3.14576e+01 1.08673e+00 3828 2005 9 3.03772e+01 1.17933e+00 4224 2005 10 2.79298e+01 1.24531e+00 4478 2005 11 2.33679e+01 1.43941e+00 2375 2005 12 2.12477e+01 9.47933e-01 2954 2006 1 1.72114e+01 1.11437e+00 2497 2006 2 1.60423e+01 9.79713e-01 2029 2006 3 1.79618e+01 1.31326e+00 2772 2006 4 2.20067e+01 1.11456e+00 1831 2006 5 2.57897e+01 1.10661e+00 2079 2006 6 2.98477e+01 8.54890e-01 3385 2006 7 3.06308e+01 1.23435e+00 2865 2006 8 3.21923e+01 1.48288e+00 3471 2006 9 3.18923e+01 1.13107e+00 4788 2006 10 2.90763e+01 9.20339e-01 3313 2006 11 2.42810e+01 2.82324e+00 3568 2006 12 1.77674e+01 1.48166e+00 2026 2007 1 1.40515e+01 8.72030e-01 2379 2007 2 1.56622e+01 1.22810e+00 2447 2007 3 1.75659e+01 1.51443e+00 2175 2007 4 2.02572e+01 1.26371e+00 960 2007 5 2.58721e+01 2.04681e+00 1476 2007 6 2.96088e+01 9.03526e-01 2816 2007 7 3.01275e+01 1.02600e+00 3309 2007 8 3.22062e+01 9.41925e-01 4511 2007 9 3.20940e+01 1.10730e+00 4301 2007 10 2.95543e+01 7.10119e-01 5657 2007 11 2.48880e+01 1.99206e+00 3446 2007 12 1.92466e+01 1.20062e+00 2529 2008 1 1.47098e+01 1.22438e+00 1732 2008 2 1.40234e+01 1.18404e+00 2315 2008 3 1.70270e+01 2.22173e+00 923 2008 4 2.12886e+01 1.50524e+00 1711 2008 5 2.51506e+01 1.49920e+00 1786 2008 6 2.78341e+01 9.29506e-01 850 2008 7 3.06421e+01 1.68618e+00 2056 2008 8 3.18813e+01 1.39534e+00 3730 2008 9 3.13663e+01 1.76222e+00 3185 2008 10 2.80402e+01 1.13735e+00 3764 2008 11 2.33049e+01 1.50288e+00 2707 2008 12 1.97528e+01 1.51402e+00 3448 2009 1 1.55153e+01 8.22923e-01 3023 2009 2 1.58968e+01 1.21043e+00 1315 2009 3 1.77547e+01 8.92227e-01 1854 2009 4 2.00996e+01 1.49250e+00 2010 2009 5 2.59578e+01 2.66047e+00 1887 2009 6 2.83125e+01 1.96375e+00 1995 2009 7 2.91272e+01 1.11854e+00 1310 2009 8 3.04149e+01 1.40105e+00 3327 2009 9 2.99973e+01 1.07602e+00 4027 2009 10 2.77686e+01 8.78660e-01 2804 2009 11 2.54276e+01 1.87892e+00 3495 2009 12 1.98534e+01 1.05450e+00 3028 2010 1 1.83459e+01 1.12043e+00 2813 2010 2 1.69582e+01 8.32966e-01 1701 2010 3 1.97166e+01 1.61472e+00 2062 2010 4 2.16183e+01 1.71917e+00 1963 2010 5 2.51700e+01 1.48234e+00 1814 2010 6 2.87615e+01 1.09360e+00 1895 2010 7 3.08570e+01 1.40372e+00 2068 2010 8 3.32234e+01 1.39413e+00 4487 2010 9 3.23475e+01 1.56271e+00 4853 2010 10 2.94094e+01 1.16154e+00 4557 2010 11 2.57787e+01 9.83886e-01 4014 2010 12 2.08481e+01 1.84727e+00 3423 2011 1 1.71229e+01 7.79657e-01 2291 2011 2 1.57309e+01 6.69177e-01 1709 2011 3 1.83426e+01 1.28291e+00 2806 2011 4 2.09912e+01 1.28085e+00 932 2011 5 2.51491e+01 2.31216e+00 1670 2011 6 2.84806e+01 1.05806e+00 1419 2011 7 3.08540e+01 1.84507e+00 2743 2011 8 3.22217e+01 1.11241e+00 4749 2011 9 3.09824e+01 7.61281e-01 4610 2011 10 2.79893e+01 1.52153e+00 4198 2011 11 2.31140e+01 1.55472e+00 2616 2011 12 1.79055e+01 1.41258e+00 2886 2012 1 1.59640e+01 9.91958e-01 2360 2012 2 1.51775e+01 7.53424e-01 1734 2012 3 1.54177e+01 1.00981e+00 2127 2012 4 2.06820e+01 2.30994e+00 1768 2012 5 2.49152e+01 2.03197e+00 1273 2012 6 2.86949e+01 1.17222e+00 2300 2012 7 3.20659e+01 1.92217e+00 3445 2012 8 3.22135e+01 9.34771e-01 4729 2012 9 3.07949e+01 9.34294e-01 4884 2012 10 2.98800e+01 1.17401e+00 4498 2012 11 2.62829e+01 1.83900e+00 3138 2012 12 2.02489e+01 1.17504e+00 2734 2013 1 1.70842e+01 1.43897e+00 1745 2013 2 1.68023e+01 9.80679e-01 2735 2013 3 1.84229e+01 1.26219e+00 2027 2013 4 2.17614e+01 1.51861e+00 2253 2013 5 2.50590e+01 1.81522e+00 3370 2013 6 2.80278e+01 1.01698e+00 1529 2013 7 3.10444e+01 8.12770e-01 3053 2013 8 3.20961e+01 8.01043e-01 5130 2013 9 3.13577e+01 1.03802e+00 5536 2013 10 2.71587e+01 1.47458e+00 3894 2013 11 2.36287e+01 8.21953e-01 3326 2013 12 1.89378e+01 2.22792e+00 3017 2014 1 1.63396e+01 6.59216e-01 2236 2014 2 1.64944e+01 6.51527e-01 3012 2014 3 1.89520e+01 1.34251e+00 2684 2014 4 2.17498e+01 1.53207e+00 1870 2014 5 2.66220e+01 1.45106e+00 3170 2014 6 2.91945e+01 1.10513e+00 2720 2014 7 3.10952e+01 8.38092e-01 4116 2014 8 3.17955e+01 1.38115e+00 4251 2014 9 3.15819e+01 1.09014e+00 5098 2014 10 2.95841e+01 1.52039e+00 4830 2014 11 2.42941e+01 1.35918e+00 3336 2014 12 2.03918e+01 9.82482e-01 3774 2015 1 1.73140e+01 1.41663e+00 2676 2015 2 1.73781e+01 1.39261e+00 1725 2015 3 1.91088e+01 9.65498e-01 2359 2015 4 2.15423e+01 1.21467e+00 1772 2015 5 2.58491e+01 2.05049e+00 1995 2015 6 2.89586e+01 1.02571e+00 2659 2015 7 3.17737e+01 1.88296e+00 2892 2015 8 3.35167e+01 9.75872e-01 5488 2015 9 3.24297e+01 1.02071e+00 5025 2015 10 3.03789e+01 1.07116e+00 4193 2015 11 2.46257e+01 1.80859e+00 4149 2015 12 1.92043e+01 1.61041e+00 3206 2016 1 1.68217e+01 7.77614e-01 3471 2016 2 1.53562e+01 8.81219e-01 2353 2016 3 1.91608e+01 1.42386e+00 2030 2016 4 2.22367e+01 1.88811e+00 2765 2016 5 2.65026e+01 1.40600e+00 2982 2016 6 2.88846e+01 1.30789e+00 2648 2016 7 3.15023e+01 1.06334e+00 3474 2016 8 3.35513e+01 6.86376e-01 4705 2016 9 3.18555e+01 1.50022e+00 4622 2016 10 2.83199e+01 1.04143e+00 4343 2016 11 2.52066e+01 1.54624e+00 2266 2016 12 1.94336e+01 1.75351e+00 2278 2017 1 1.70055e+01 9.21349e-01 2073 2017 2 1.51585e+01 1.01764e+00 2121 2017 3 1.77659e+01 1.62325e+00 2020 2017 4 2.16861e+01 1.31375e+00 1159 2017 5 2.67165e+01 1.95887e+00 2697 2017 6 2.88011e+01 1.35003e+00 1657 2017 7 3.21293e+01 1.56628e+00 3870 2017 8 3.43257e+01 8.16158e-01 4236 2017 9 3.30755e+01 9.84657e-01 4983 2017 10 2.92185e+01 1.75417e+00 4583 2017 11 2.52984e+01 1.88271e+00 3322 2017 12 1.99002e+01 9.91852e-01 3390 2018 1 1.84170e+01 1.17682e+00 3511 2018 2 1.73916e+01 1.14620e+00 1964 2018 3 2.01003e+01 1.32088e+00 2917 2018 4 2.28206e+01 1.46962e+00 2159 2018 5 2.59827e+01 1.74332e+00 2883 2018 6 2.96888e+01 1.03649e+00 2808 2018 7 3.10596e+01 9.15695e-01 3432 2018 8 3.12672e+01 7.68419e-01 4152 2018 9 3.25222e+01 7.05491e-01 5252 2018 10 3.06852e+01 1.48963e+00 5062 2018 11 2.41569e+01 8.10120e-01 1575 2018 12 2.12006e+01 1.61895e+00 3278 2019 1 1.66877e+01 1.25720e+00 1358 2019 2 1.70030e+01 7.78482e-01 2420 2019 3 1.82235e+01 1.04183e+00 3525 2019 4 2.16860e+01 1.20224e+00 3107 2019 5 2.66354e+01 2.27907e+00 3874 2019 6 3.17059e+01 1.14746e+00 4659 2019 7 3.13544e+01 1.03376e+00 3818 2019 8 3.27514e+01 6.54504e-01 6202 2019 9 3.20219e+01 8.70932e-01 6735 2019 10 3.18415e+01 1.14793e+00 5054 2019 11 2.51214e+01 1.89952e+00 5033 2019 12 2.03564e+01 1.31469e+00 3623 2020 1 1.78147e+01 9.55693e-01 4470 2020 2 1.64563e+01 7.00643e-01 3770 2020 3 1.84815e+01 1.09886e+00 3154 2020 4 2.25218e+01 1.50176e+00 2681 2020 5 2.73118e+01 1.76667e+00 5219 2020 6 2.91731e+01 8.04869e-01 6934 2020 7 3.29466e+01 1.61682e+00 5620 2020 8 3.34952e+01 1.08208e+00 4867 2020 9 3.30035e+01 6.65988e-01 6551 2020 10 3.02705e+01 1.54772e+00 7473 2020 11 2.65774e+01 1.69957e+00 3274 2020 12 2.05521e+01 1.28134e+00 3925 2021 1 1.77105e+01 1.00912e+00 5356 2021 2 1.73689e+01 8.17645e-01 4420 2021 3 1.85247e+01 7.56778e-01 4155 2021 4 2.22206e+01 2.11643e+00 2879 2021 5 2.81535e+01 1.90974e+00 4921 2021 6 2.98389e+01 9.82483e-01 6515 2021 7 3.30103e+01 1.31344e+00 6219 2021 8 3.39300e+01 9.00430e-01 6520 2021 9 3.19236e+01 1.29002e+00 6617 2021 10 2.91538e+01 1.36327e+00 6580 2021 11 2.49963e+01 1.63615e+00 5098 2021 12 2.08767e+01 1.33635e+00 2853 2022 1 1.74219e+01 9.99766e-01 3801 2022 2 1.62692e+01 8.14070e-01 4362 2022 3 -8.12235e+01 3.01357e+02 3288 2022 4 2.19469e+01 1.34294e+00 1773 2022 5 2.52736e+01 1.16103e+00 4202 2022 6 2.93649e+01 9.56659e-01 5122 2022 7 3.16431e+01 1.41355e+00 3603 2022 8 3.41237e+01 7.09132e-01 5439 2022 9 3.27812e+01 1.21865e+00 5626 2022 10 3.00737e+01 6.44733e-01 3992 2022 11 2.62763e+01 1.72510e+00 2668 2022 12 2.14877e+01 1.26979e+00 4330 2023 1 1.74665e+01 8.56092e-01 2293 2023 2 1.65220e+01 7.52460e-01 2470 2023 3 1.94417e+01 1.12321e+00 4307 2023 4 2.25453e+01 1.84249e+00 4928 2023 5 2.58792e+01 1.39385e+00 4140 2023 6 2.89464e+01 9.45988e-01 5427 2023 7 3.17155e+01 1.18600e+00 6128 2023 8 3.42344e+01 7.74857e-01 5925 2023 9 3.28835e+01 1.00001e+00 6128 2023 10 3.03295e+01 1.31891e+00 5110 2023 11 2.54633e+01 1.62776e+00 4187 2023 12 2.16027e+01 1.11855e+00 4359 2024 1 1.89965e+01 7.68736e-01 4066 2024 2 1.85127e+01 5.54454e-01 4812 2024 3 1.93268e+01 9.28592e-01 3827 2024 4 2.15620e+01 6.78448e-01 732