YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.60491e+01 4.19107e-01 110 2000 3 1.64088e+01 1.05303e+00 1045 2000 4 2.12552e+01 1.74037e+00 85 2000 5 2.56814e+01 1.55348e+00 384 2000 6 2.75132e+01 7.61135e-01 277 2000 7 3.13792e+01 1.36098e+00 549 2000 8 3.32140e+01 1.05583e+00 762 2000 9 2.94560e+01 8.17910e-01 1372 2000 10 2.74671e+01 1.04381e+00 1451 2000 11 2.21890e+01 1.22019e+00 1399 2000 12 1.88458e+01 9.48817e-01 1210 2001 1 1.66550e+01 6.65573e-01 1532 2001 2 1.59234e+01 9.47072e-01 1282 2001 3 1.86636e+01 9.35829e-01 1429 2001 4 2.24511e+01 7.55191e-01 686 2001 5 2.55760e+01 1.64652e+00 890 2001 6 2.79112e+01 8.68303e-01 459 2001 7 3.07840e+01 1.21940e+00 1137 2001 8 3.27869e+01 1.05701e+00 1872 2001 9 3.11891e+01 7.38691e-01 2266 2001 10 2.91710e+01 7.98011e-01 1968 2001 11 2.41080e+01 2.84356e+00 1521 2001 12 1.84719e+01 8.29014e-01 676 2002 1 1.61470e+01 9.57219e-01 1394 2002 2 1.64441e+01 7.67759e-01 1183 2002 3 1.86194e+01 1.03083e+00 863 2002 4 2.10831e+01 2.05457e+00 824 2002 5 2.63406e+01 1.25485e+00 1612 2002 6 2.90961e+01 1.27229e+00 1301 2002 7 3.11226e+01 8.50312e-01 2680 2002 8 3.10476e+01 7.57721e-01 3148 2002 9 2.99025e+01 9.81758e-01 4223 2002 10 2.91224e+01 1.08406e+00 4368 2002 11 2.42610e+01 1.90545e+00 3772 2002 12 1.87380e+01 2.13828e+00 2249 2003 1 1.59667e+01 5.82976e-01 2400 2003 2 1.62146e+01 7.78201e-01 2046 2003 3 1.70574e+01 1.16680e+00 1954 2003 4 2.10339e+01 1.75959e+00 1513 2003 5 2.48772e+01 1.63592e+00 1615 2003 6 2.84732e+01 1.22491e+00 1843 2003 7 3.02444e+01 8.23238e-01 3140 2003 8 3.22516e+01 9.22914e-01 4293 2003 9 2.96781e+01 1.16161e+00 4049 2003 10 2.85703e+01 9.85120e-01 4895 2003 11 2.31757e+01 2.09236e+00 2214 2003 12 1.87660e+01 1.21973e+00 2008 2004 1 1.68783e+01 5.79090e-01 2264 2004 2 1.65487e+01 9.54447e-01 2193 2004 3 1.84371e+01 1.03760e+00 2113 2004 4 2.07583e+01 1.33251e+00 2005 2004 5 2.48168e+01 1.77466e+00 2565 2004 6 2.84024e+01 1.17736e+00 2291 2004 7 3.12130e+01 1.13643e+00 4058 2004 8 3.11181e+01 8.21402e-01 3587 2004 9 3.03097e+01 1.09736e+00 3968 2004 10 2.88882e+01 1.40766e+00 3830 2004 11 2.52117e+01 2.11869e+00 2161 2004 12 1.64724e+01 1.56980e+00 2044 2005 1 1.45581e+01 7.76150e-01 2289 2005 2 1.48537e+01 1.07886e+00 1879 2005 3 1.82460e+01 1.16806e+00 2665 2005 4 2.08872e+01 1.39235e+00 1986 2005 5 2.57661e+01 2.07641e+00 2206 2005 6 2.84673e+01 1.19845e+00 2233 2005 7 3.07131e+01 1.66796e+00 2033 2005 8 3.14558e+01 1.17075e+00 3895 2005 9 2.98364e+01 1.36912e+00 3805 2005 10 2.72178e+01 1.65442e+00 3641 2005 11 2.20283e+01 1.48699e+00 2265 2005 12 2.00246e+01 1.15459e+00 2775 2006 1 1.62560e+01 1.00976e+00 2091 2006 2 1.59194e+01 1.15604e+00 1756 2006 3 1.83148e+01 1.10187e+00 2689 2006 4 2.18994e+01 1.17566e+00 1707 2006 5 2.64726e+01 1.33012e+00 2434 2006 6 2.97301e+01 8.60586e-01 3389 2006 7 3.04283e+01 1.23207e+00 2299 2006 8 3.19998e+01 1.20748e+00 3351 2006 9 3.14312e+01 1.19548e+00 4548 2006 10 2.86808e+01 9.92820e-01 3277 2006 11 2.33133e+01 3.08445e+00 3601 2006 12 1.63702e+01 1.82808e+00 2170 2007 1 1.34338e+01 7.85981e-01 1938 2007 2 1.58603e+01 1.04869e+00 2363 2007 3 1.81384e+01 1.05046e+00 2049 2007 4 2.00386e+01 1.16077e+00 847 2007 5 2.59879e+01 1.90418e+00 1306 2007 6 2.92656e+01 8.74602e-01 2064 2007 7 3.01731e+01 1.16366e+00 3420 2007 8 3.21292e+01 8.13568e-01 4341 2007 9 3.14235e+01 1.06037e+00 3983 2007 10 2.90058e+01 8.04759e-01 4891 2007 11 2.39470e+01 2.15324e+00 3126 2007 12 1.76201e+01 1.33765e+00 2206 2008 1 1.36295e+01 9.91832e-01 1884 2008 2 1.34177e+01 1.20938e+00 2181 2008 3 1.64541e+01 1.29046e+00 783 2008 4 2.12449e+01 1.49298e+00 1652 2008 5 2.52502e+01 1.92313e+00 1936 2008 6 2.81598e+01 1.05452e+00 923 2008 7 3.06615e+01 1.45277e+00 2386 2008 8 3.16008e+01 1.41661e+00 3644 2008 9 3.11379e+01 1.84384e+00 2998 2008 10 2.73649e+01 1.06235e+00 3524 2008 11 2.24530e+01 1.25174e+00 2522 2008 12 1.87912e+01 1.36047e+00 3335 2009 1 1.44270e+01 7.42022e-01 2856 2009 2 1.49198e+01 1.23508e+00 1182 2009 3 1.75179e+01 1.13488e+00 1914 2009 4 1.98969e+01 1.63696e+00 1830 2009 5 2.54225e+01 2.35506e+00 1731 2009 6 2.87974e+01 1.76871e+00 2108 2009 7 2.93499e+01 9.42984e-01 1374 2009 8 3.03491e+01 1.30364e+00 3048 2009 9 2.97921e+01 1.02719e+00 4545 2009 10 2.72365e+01 7.91571e-01 2912 2009 11 2.44817e+01 1.96672e+00 3042 2009 12 1.87800e+01 1.05196e+00 3203 2010 1 1.77609e+01 7.73708e-01 2711 2010 2 1.63993e+01 1.09180e+00 1436 2010 3 1.91056e+01 1.69714e+00 1795 2010 4 2.19894e+01 2.11965e+00 1694 2010 5 2.56608e+01 1.60817e+00 2171 2010 6 2.87024e+01 9.97999e-01 1670 2010 7 3.08620e+01 1.23350e+00 2054 2010 8 3.31461e+01 1.30528e+00 4041 2010 9 3.19033e+01 1.73849e+00 4567 2010 10 2.86149e+01 1.31437e+00 4296 2010 11 2.45405e+01 1.35246e+00 3979 2010 12 1.98475e+01 1.71318e+00 3162 2011 1 1.61784e+01 8.58798e-01 2558 2011 2 1.46015e+01 9.90919e-01 2018 2011 3 1.79167e+01 1.54761e+00 2730 2011 4 2.08366e+01 1.68359e+00 1068 2011 5 2.45751e+01 2.49462e+00 1585 2011 6 2.83912e+01 1.03171e+00 1403 2011 7 3.07456e+01 1.72379e+00 2785 2011 8 3.20733e+01 1.01575e+00 4298 2011 9 3.06644e+01 6.89514e-01 3953 2011 10 2.73221e+01 1.72720e+00 3837 2011 11 2.19637e+01 1.49129e+00 2482 2011 12 1.66860e+01 1.22329e+00 2866 2012 1 1.51973e+01 8.66710e-01 2793 2012 2 1.47166e+01 7.77660e-01 1646 2012 3 1.51752e+01 1.16959e+00 2163 2012 4 2.02647e+01 2.07347e+00 1483 2012 5 2.51250e+01 2.11667e+00 1157 2012 6 2.88572e+01 1.48932e+00 2448 2012 7 3.20605e+01 1.77659e+00 3187 2012 8 3.19804e+01 1.07455e+00 4231 2012 9 3.05218e+01 8.86898e-01 4257 2012 10 2.95653e+01 1.22024e+00 4329 2012 11 2.56377e+01 2.12808e+00 2904 2012 12 1.90234e+01 1.26641e+00 2326 2013 1 1.58659e+01 1.11488e+00 2273 2013 2 1.70097e+01 9.42316e-01 2560 2013 3 1.87507e+01 1.17980e+00 2370 2013 4 2.20940e+01 1.69474e+00 2144 2013 5 2.54539e+01 1.83897e+00 3340 2013 6 2.81428e+01 1.22578e+00 1683 2013 7 3.10013e+01 8.60021e-01 2853 2013 8 3.18955e+01 8.60451e-01 4968 2013 9 3.10644e+01 1.15132e+00 5186 2013 10 2.65987e+01 1.64931e+00 3983 2013 11 2.26747e+01 9.94732e-01 3008 2013 12 1.79026e+01 2.30264e+00 2860 2014 1 1.50254e+01 7.18208e-01 2172 2014 2 1.57795e+01 7.40610e-01 2996 2014 3 1.91589e+01 1.61556e+00 2596 2014 4 2.18635e+01 2.18680e+00 1678 2014 5 2.70138e+01 1.43858e+00 2557 2014 6 2.94677e+01 1.03071e+00 3089 2014 7 3.10677e+01 7.89581e-01 3983 2014 8 3.18332e+01 1.02853e+00 4293 2014 9 3.14454e+01 1.24904e+00 5401 2014 10 2.89637e+01 1.76234e+00 4614 2014 11 2.30817e+01 1.56641e+00 3524 2014 12 1.92628e+01 8.93673e-01 3670 2015 1 1.66290e+01 1.18186e+00 2956 2015 2 1.65709e+01 1.20247e+00 1697 2015 3 1.83767e+01 1.30669e+00 2160 2015 4 2.14002e+01 1.40449e+00 1928 2015 5 2.59620e+01 1.44446e+00 1936 2015 6 2.88191e+01 9.86925e-01 2458 2015 7 3.16538e+01 1.92795e+00 2922 2015 8 3.35620e+01 7.15918e-01 5428 2015 9 3.21184e+01 1.01173e+00 4910 2015 10 2.99078e+01 9.75316e-01 4138 2015 11 2.35684e+01 1.73848e+00 3903 2015 12 1.81174e+01 1.56146e+00 2823 2016 1 1.57480e+01 6.50439e-01 3583 2016 2 1.56673e+01 1.08876e+00 2923 2016 3 1.89631e+01 1.26138e+00 2291 2016 4 2.19084e+01 1.68059e+00 2819 2016 5 2.67645e+01 1.55342e+00 2803 2016 6 2.90137e+01 1.21879e+00 2677 2016 7 3.15636e+01 1.04003e+00 3385 2016 8 3.32096e+01 7.92620e-01 4943 2016 9 3.12709e+01 1.63241e+00 4281 2016 10 2.79807e+01 9.62807e-01 4450 2016 11 2.38370e+01 1.85201e+00 2132 2016 12 1.74758e+01 1.63510e+00 1906 2017 1 1.56328e+01 8.01129e-01 1741 2017 2 1.43829e+01 8.96787e-01 2194 2017 3 1.71807e+01 1.79563e+00 2016 2017 4 2.17933e+01 1.86798e+00 1333 2017 5 2.65528e+01 2.06512e+00 2684 2017 6 2.85180e+01 1.55193e+00 1688 2017 7 3.24869e+01 1.48639e+00 3368 2017 8 3.41145e+01 7.09250e-01 4380 2017 9 3.30506e+01 1.03324e+00 4844 2017 10 2.84197e+01 1.82602e+00 4371 2017 11 2.43154e+01 2.17120e+00 3636 2017 12 1.87060e+01 1.16762e+00 3374 2018 1 1.72956e+01 9.96103e-01 3841 2018 2 1.69418e+01 1.17870e+00 2025 2018 3 2.00388e+01 1.34739e+00 2783 2018 4 2.25307e+01 1.38288e+00 1991 2018 5 2.65355e+01 1.60214e+00 2526 2018 6 2.97304e+01 9.79119e-01 2106 2018 7 3.14605e+01 7.79131e-01 3601 2018 8 3.12587e+01 6.98413e-01 4334 2018 9 3.24566e+01 6.85945e-01 5011 2018 10 3.01858e+01 1.67216e+00 4858 2018 11 2.33098e+01 1.49602e+00 1954 2018 12 1.99195e+01 1.22721e+00 3198 2019 1 1.61156e+01 1.85278e+00 1065 2019 2 1.69364e+01 7.13661e-01 2629 2019 3 1.83753e+01 1.08738e+00 3541 2019 4 2.17747e+01 1.32418e+00 3113 2019 5 2.65816e+01 2.48070e+00 3874 2019 6 3.13288e+01 1.07758e+00 4510 2019 7 3.13947e+01 7.91039e-01 3894 2019 8 3.25944e+01 7.00369e-01 6006 2019 9 3.18462e+01 8.95309e-01 6681 2019 10 3.13642e+01 1.41509e+00 4969 2019 11 2.43751e+01 2.06697e+00 4593 2019 12 1.91623e+01 1.04506e+00 3272 2020 1 1.67473e+01 7.75004e-01 4334 2020 2 1.59617e+01 7.82609e-01 3799 2020 3 1.86253e+01 9.33821e-01 3426 2020 4 2.24850e+01 1.45934e+00 2941 2020 5 2.72292e+01 1.70232e+00 4741 2020 6 2.97582e+01 6.94303e-01 7031 2020 7 3.30537e+01 1.64386e+00 5237 2020 8 3.34281e+01 1.14134e+00 4949 2020 9 3.30109e+01 8.40540e-01 6479 2020 10 2.98674e+01 1.64976e+00 7298 2020 11 2.53419e+01 1.84763e+00 3331 2020 12 1.94659e+01 1.26205e+00 4113 2021 1 1.69883e+01 8.03321e-01 5371 2021 2 1.73631e+01 7.32825e-01 4152 2021 3 1.84654e+01 7.82249e-01 4104 2021 4 2.17910e+01 1.87391e+00 2634 2021 5 2.80803e+01 1.91630e+00 4687 2021 6 2.94174e+01 1.10017e+00 6313 2021 7 3.29181e+01 1.16520e+00 6094 2021 8 3.37375e+01 9.21725e-01 7002 2021 9 3.12928e+01 1.48972e+00 6571 2021 10 2.80720e+01 1.29075e+00 6583 2021 11 2.42697e+01 1.85541e+00 4938 2021 12 1.97423e+01 1.37464e+00 2466 2022 1 1.63716e+01 1.09415e+00 3981 2022 2 1.61800e+01 9.88307e-01 4589 2022 3 -7.60551e+01 2.93844e+02 3477 2022 4 2.12593e+01 1.27054e+00 1671 2022 5 2.53750e+01 1.36324e+00 4265 2022 6 2.96682e+01 9.51633e-01 5137 2022 7 3.16659e+01 1.39023e+00 3657 2022 8 3.39619e+01 8.74766e-01 5330 2022 9 3.24254e+01 1.37091e+00 5886 2022 10 2.93233e+01 5.51964e-01 4019 2022 11 2.47754e+01 1.72286e+00 2625 2022 12 2.01365e+01 1.40976e+00 4153 2023 1 1.63860e+01 6.66241e-01 1935 2023 2 1.61774e+01 8.54332e-01 2003 2023 3 1.91678e+01 1.29474e+00 4371 2023 4 2.24837e+01 1.84014e+00 5116 2023 5 2.62553e+01 1.46599e+00 4497 2023 6 2.96524e+01 8.68378e-01 5545 2023 7 3.19489e+01 1.24639e+00 6188 2023 8 3.39755e+01 7.63327e-01 5766 2023 9 3.24185e+01 1.12751e+00 6450 2023 10 2.97384e+01 1.35625e+00 5154 2023 11 2.48824e+01 2.03147e+00 3938 2023 12 2.04688e+01 1.02005e+00 4473 2024 1 1.82368e+01 6.59776e-01 4016 2024 2 1.82432e+01 6.59684e-01 4618 2024 3 1.92771e+01 9.83167e-01 3881 2024 4 2.18649e+01 6.69168e-01 882