YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.66592e+01 5.62490e-01 182 2000 3 1.66259e+01 1.10391e+00 940 2000 4 2.13501e+01 1.84213e+00 112 2000 5 2.55221e+01 1.88354e+00 303 2000 6 2.76510e+01 7.83563e-01 280 2000 7 3.15809e+01 1.59124e+00 463 2000 8 3.30601e+01 8.74507e-01 662 2000 9 2.87880e+01 1.00128e+00 905 2000 10 2.68094e+01 1.03642e+00 767 2000 11 2.13036e+01 1.38652e+00 560 2000 12 1.75327e+01 1.11287e+00 482 2001 1 1.58805e+01 8.15141e-01 1009 2001 2 1.61741e+01 8.13989e-01 1038 2001 3 1.95886e+01 1.17647e+00 1276 2001 4 2.27027e+01 9.34314e-01 841 2001 5 2.52016e+01 1.35411e+00 691 2001 6 2.71348e+01 6.86162e-01 183 2001 7 3.09884e+01 1.58811e+00 802 2001 8 3.23663e+01 1.13875e+00 1634 2001 9 3.06272e+01 7.70645e-01 1631 2001 10 2.84109e+01 7.26339e-01 1323 2001 11 2.41682e+01 1.88489e+00 564 2001 12 1.79911e+01 1.26372e+00 452 2002 1 1.53793e+01 9.76240e-01 680 2002 2 1.61300e+01 7.81627e-01 762 2002 3 1.90472e+01 1.07571e+00 748 2002 4 2.06872e+01 1.53102e+00 576 2002 5 2.56925e+01 1.69064e+00 997 2002 6 2.84748e+01 1.22904e+00 976 2002 7 3.11116e+01 1.17513e+00 2298 2002 8 3.04448e+01 8.00356e-01 2320 2002 9 2.90688e+01 8.44674e-01 2798 2002 10 2.85968e+01 1.03184e+00 2816 2002 11 2.37733e+01 2.03904e+00 1435 2002 12 1.84779e+01 1.61331e+00 866 2003 1 1.60728e+01 1.06977e+00 1603 2003 2 1.60633e+01 1.08804e+00 1601 2003 3 1.69922e+01 1.32149e+00 1303 2003 4 2.12845e+01 1.83305e+00 931 2003 5 2.46022e+01 1.71231e+00 1427 2003 6 2.80577e+01 1.65104e+00 1273 2003 7 2.98948e+01 8.24025e-01 2070 2003 8 3.17766e+01 9.04240e-01 3020 2003 9 2.90029e+01 1.04422e+00 2471 2003 10 2.81178e+01 1.02287e+00 3143 2003 11 2.31308e+01 1.76051e+00 844 2003 12 1.81383e+01 1.20662e+00 1133 2004 1 1.61099e+01 8.89299e-01 1788 2004 2 1.61917e+01 9.73762e-01 1575 2004 3 1.85239e+01 9.75663e-01 1839 2004 4 2.09229e+01 1.26542e+00 1545 2004 5 2.42142e+01 1.90527e+00 1535 2004 6 2.78484e+01 1.06165e+00 1718 2004 7 3.07701e+01 1.29539e+00 2714 2004 8 3.06910e+01 9.34061e-01 2681 2004 9 2.97080e+01 1.42309e+00 3193 2004 10 2.82158e+01 1.62633e+00 2582 2004 11 2.50086e+01 1.77722e+00 779 2004 12 1.66049e+01 1.48084e+00 436 2005 1 1.40853e+01 9.27948e-01 1387 2005 2 1.47477e+01 1.21170e+00 1407 2005 3 1.78010e+01 1.06505e+00 1814 2005 4 2.09746e+01 1.83311e+00 1561 2005 5 2.56763e+01 2.19780e+00 1539 2005 6 2.79442e+01 1.18762e+00 1333 2005 7 3.03237e+01 1.48567e+00 1456 2005 8 3.08707e+01 1.04733e+00 2792 2005 9 2.92749e+01 1.31560e+00 2668 2005 10 2.71592e+01 1.52136e+00 2650 2005 11 2.24567e+01 1.88330e+00 914 2005 12 1.96571e+01 1.31548e+00 1291 2006 1 1.55961e+01 1.13037e+00 1127 2006 2 1.54153e+01 1.19069e+00 1089 2006 3 1.79407e+01 1.30406e+00 1950 2006 4 2.13204e+01 1.79866e+00 1298 2006 5 2.57404e+01 1.64056e+00 1911 2006 6 2.94861e+01 1.39142e+00 1929 2006 7 3.00585e+01 1.48811e+00 1660 2006 8 3.13910e+01 1.24776e+00 2520 2006 9 3.05717e+01 1.22256e+00 3073 2006 10 2.83095e+01 1.18860e+00 2403 2006 11 2.42843e+01 2.79889e+00 1236 2006 12 1.68460e+01 1.50670e+00 467 2007 1 1.41624e+01 9.91662e-01 1541 2007 2 1.60024e+01 1.22631e+00 2084 2007 3 1.78268e+01 1.24280e+00 1900 2007 4 1.99650e+01 1.40711e+00 757 2007 5 2.68419e+01 2.46949e+00 631 2007 6 2.84953e+01 1.55992e+00 1166 2007 7 2.99253e+01 1.29134e+00 2157 2007 8 3.14144e+01 1.08401e+00 3184 2007 9 3.01104e+01 1.15705e+00 3089 2007 10 2.81484e+01 8.87853e-01 3290 2007 11 2.35586e+01 1.85525e+00 1044 2007 12 1.80441e+01 1.59617e+00 992 2008 1 1.34814e+01 1.41638e+00 1155 2008 2 1.43553e+01 1.29710e+00 1581 2008 3 1.70631e+01 1.72501e+00 939 2008 4 2.12112e+01 1.76909e+00 1356 2008 5 2.45639e+01 2.20216e+00 1328 2008 6 2.75878e+01 1.14925e+00 850 2008 7 2.99748e+01 1.48791e+00 1817 2008 8 3.16011e+01 1.48661e+00 3386 2008 9 3.06905e+01 2.18256e+00 2153 2008 10 2.64872e+01 1.31038e+00 1964 2008 11 2.15172e+01 9.31783e-01 1570 2008 12 1.80099e+01 1.47992e+00 1715 2009 1 1.39502e+01 6.90823e-01 2061 2009 2 1.46114e+01 1.28716e+00 962 2009 3 1.76879e+01 1.12489e+00 2060 2009 4 2.04350e+01 1.78078e+00 1616 2009 5 2.58875e+01 2.61337e+00 1364 2009 6 2.83360e+01 1.55229e+00 1719 2009 7 2.93555e+01 1.04599e+00 1524 2009 8 3.04367e+01 1.14437e+00 2400 2009 9 2.93259e+01 8.81614e-01 2816 2009 10 2.65753e+01 9.89804e-01 2193 2009 11 2.45775e+01 1.87936e+00 1071 2009 12 1.80725e+01 1.01777e+00 1755 2010 1 1.73346e+01 1.07460e+00 2094 2010 2 1.63592e+01 1.35545e+00 1294 2010 3 1.91562e+01 1.42597e+00 1626 2010 4 2.23387e+01 2.05080e+00 1283 2010 5 2.52661e+01 1.52442e+00 1614 2010 6 2.87795e+01 9.69721e-01 1513 2010 7 3.10315e+01 1.37056e+00 1893 2010 8 3.33895e+01 1.23236e+00 3294 2010 9 3.10406e+01 1.73337e+00 3223 2010 10 2.81128e+01 1.49241e+00 2880 2010 11 2.32581e+01 1.81529e+00 2057 2010 12 1.87232e+01 1.45380e+00 1195 2011 1 1.55824e+01 7.13035e-01 1426 2011 2 1.47143e+01 8.87447e-01 1938 2011 3 1.80355e+01 1.37237e+00 2416 2011 4 2.09017e+01 1.79219e+00 965 2011 5 2.52405e+01 2.30848e+00 1544 2011 6 2.81313e+01 1.25399e+00 1205 2011 7 3.06545e+01 1.63831e+00 2396 2011 8 3.18304e+01 1.11217e+00 3580 2011 9 3.00534e+01 7.46458e-01 2644 2011 10 2.65324e+01 1.64437e+00 2131 2011 11 2.08125e+01 1.52154e+00 667 2011 12 1.57230e+01 8.44056e-01 1439 2012 1 1.47513e+01 8.31380e-01 2231 2012 2 1.42947e+01 9.67672e-01 1495 2012 3 1.53548e+01 1.12837e+00 1933 2012 4 2.11148e+01 1.39906e+00 1424 2012 5 2.52765e+01 1.36281e+00 1054 2012 6 2.86021e+01 1.50361e+00 1901 2012 7 3.20423e+01 1.90587e+00 2677 2012 8 3.14982e+01 1.17913e+00 3206 2012 9 2.97139e+01 1.01306e+00 3403 2012 10 2.91837e+01 1.25895e+00 3001 2012 11 2.48180e+01 2.21102e+00 1066 2012 12 1.82181e+01 1.48436e+00 1182 2013 1 1.51538e+01 1.18546e+00 1484 2013 2 1.68673e+01 9.94994e-01 2343 2013 3 1.86681e+01 1.24836e+00 1977 2013 4 2.19250e+01 1.64369e+00 2158 2013 5 2.50761e+01 1.80204e+00 2880 2013 6 2.78347e+01 1.22028e+00 1192 2013 7 3.05188e+01 9.39859e-01 1872 2013 8 3.15819e+01 1.07581e+00 4038 2013 9 3.06278e+01 1.23140e+00 3410 2013 10 2.64212e+01 1.93506e+00 2360 2013 11 2.22337e+01 1.18100e+00 2193 2013 12 1.77074e+01 2.44683e+00 1158 2014 1 1.45930e+01 9.33526e-01 1751 2014 2 1.57521e+01 1.02659e+00 2633 2014 3 1.97378e+01 1.18856e+00 2065 2014 4 2.13496e+01 1.78890e+00 1260 2014 5 2.68426e+01 1.64615e+00 2386 2014 6 2.90058e+01 1.01461e+00 2509 2014 7 3.06675e+01 7.78243e-01 3192 2014 8 3.15926e+01 1.10366e+00 3668 2014 9 3.11561e+01 1.61029e+00 3683 2014 10 2.80218e+01 2.00472e+00 2841 2014 11 2.25136e+01 1.82022e+00 1913 2014 12 1.84884e+01 9.76599e-01 1824 2015 1 1.58565e+01 1.12879e+00 2098 2015 2 1.64245e+01 1.26630e+00 1651 2015 3 1.85475e+01 1.22379e+00 2093 2015 4 2.15524e+01 1.61591e+00 1548 2015 5 2.58152e+01 1.47338e+00 1552 2015 6 2.86032e+01 1.11887e+00 1981 2015 7 3.15839e+01 1.97417e+00 2514 2015 8 3.33415e+01 8.70278e-01 4629 2015 9 3.15774e+01 1.20597e+00 3936 2015 10 2.91599e+01 1.09706e+00 2370 2015 11 2.26602e+01 1.75903e+00 1619 2015 12 1.78275e+01 1.58242e+00 1353 2016 1 1.55394e+01 1.03482e+00 2700 2016 2 1.60077e+01 1.23653e+00 2554 2016 3 1.91052e+01 1.13396e+00 2035 2016 4 2.25909e+01 2.07062e+00 2542 2016 5 2.63421e+01 1.59638e+00 2575 2016 6 2.88321e+01 1.56817e+00 2515 2016 7 3.15197e+01 1.20990e+00 2768 2016 8 3.29398e+01 8.85527e-01 4063 2016 9 3.09442e+01 1.89083e+00 2942 2016 10 2.71056e+01 8.61096e-01 3229 2016 11 2.29125e+01 1.97369e+00 921 2016 12 1.71125e+01 1.45376e+00 932 2017 1 1.50695e+01 9.22026e-01 1578 2017 2 1.44983e+01 9.64443e-01 2039 2017 3 1.76904e+01 1.36751e+00 1649 2017 4 2.18061e+01 1.67497e+00 1149 2017 5 2.64794e+01 1.86558e+00 2153 2017 6 2.85259e+01 1.64089e+00 1846 2017 7 3.24647e+01 1.31891e+00 3202 2017 8 3.40010e+01 7.96102e-01 4180 2017 9 3.22652e+01 1.20587e+00 3619 2017 10 2.77604e+01 1.64903e+00 2602 2017 11 2.42749e+01 2.41651e+00 1651 2017 12 1.76728e+01 1.41869e+00 1602 2018 1 1.62621e+01 1.05913e+00 2837 2018 2 1.68572e+01 1.33708e+00 1729 2018 3 2.05109e+01 1.39871e+00 2624 2018 4 2.28650e+01 1.36867e+00 1899 2018 5 2.73029e+01 1.79598e+00 2244 2018 6 2.96707e+01 1.39258e+00 1767 2018 7 3.10143e+01 8.05525e-01 2996 2018 8 3.10070e+01 8.71157e-01 3807 2018 9 3.22001e+01 8.76342e-01 4477 2018 10 2.97134e+01 1.37527e+00 3617 2018 11 2.25405e+01 1.79925e+00 1162 2018 12 1.91596e+01 1.19209e+00 2754 2019 1 1.57871e+01 1.74780e+00 816 2019 2 1.63289e+01 9.67280e-01 1957 2019 3 1.82372e+01 1.27516e+00 2803 2019 4 2.16334e+01 1.40996e+00 2425 2019 5 2.63297e+01 2.81316e+00 2116 2019 6 3.10285e+01 1.69934e+00 3018 2019 7 3.07132e+01 1.10200e+00 2626 2019 8 3.21695e+01 1.06412e+00 5392 2019 9 3.14720e+01 1.03008e+00 5944 2019 10 3.10359e+01 1.55679e+00 4190 2019 11 2.40420e+01 2.19920e+00 2051 2019 12 1.85983e+01 1.11286e+00 2710 2020 1 1.65777e+01 9.59729e-01 3630 2020 2 1.62839e+01 1.15281e+00 3297 2020 3 1.91748e+01 1.08330e+00 3142 2020 4 2.32197e+01 1.40612e+00 2869 2020 5 2.72581e+01 1.72383e+00 4074 2020 6 2.96140e+01 1.00117e+00 6630 2020 7 3.34300e+01 1.64450e+00 5639 2020 8 3.30550e+01 1.25468e+00 4346 2020 9 3.26841e+01 1.09150e+00 5565 2020 10 2.96315e+01 1.75347e+00 4966 2020 11 2.54547e+01 2.16426e+00 2221 2020 12 1.90429e+01 1.14523e+00 3114 2021 1 1.67554e+01 9.10349e-01 4108 2021 2 1.76257e+01 9.08614e-01 3974 2021 3 1.90052e+01 8.87813e-01 3597 2021 4 2.22169e+01 2.14476e+00 2532 2021 5 2.86659e+01 1.92083e+00 4479 2021 6 2.93186e+01 1.13782e+00 5201 2021 7 3.28894e+01 1.36791e+00 5808 2021 8 3.35550e+01 9.94835e-01 5762 2021 9 3.06997e+01 1.85540e+00 4925 2021 10 2.74705e+01 1.14732e+00 5303 2021 11 2.40401e+01 2.36022e+00 3459 2021 12 1.89844e+01 1.48341e+00 1336 2022 1 1.55914e+01 1.00279e+00 2642 2022 2 1.62872e+01 1.11983e+00 4449 2022 3 -9.31761e+01 3.17298e+02 2928 2022 4 2.15479e+01 1.33853e+00 1017 2022 5 2.56828e+01 1.33339e+00 3933 2022 6 3.00148e+01 1.05089e+00 4841 2022 7 3.13001e+01 1.29416e+00 3602 2022 8 3.37772e+01 1.13331e+00 4731 2022 9 3.20982e+01 1.65323e+00 5199 2022 10 2.88268e+01 6.91242e-01 4057 2022 11 2.42499e+01 1.71049e+00 1574 2022 12 1.94866e+01 1.60103e+00 3199 2023 1 1.56413e+01 9.94885e-01 2116 2023 2 1.60232e+01 1.04170e+00 1995 2023 3 1.97964e+01 1.39599e+00 4257 2023 4 2.28633e+01 2.20761e+00 4867 2023 5 2.63865e+01 1.61706e+00 4039 2023 6 2.93608e+01 1.04755e+00 5486 2023 7 3.19639e+01 1.49779e+00 6231 2023 8 3.36333e+01 9.96514e-01 5431 2023 9 3.18231e+01 1.26416e+00 5305 2023 10 2.89548e+01 1.37649e+00 4364 2023 11 2.46015e+01 1.94971e+00 3145 2023 12 1.95613e+01 8.89658e-01 3803 2024 1 1.75968e+01 7.00265e-01 3416 2024 2 1.80124e+01 1.00028e+00 4169 2024 3 1.93665e+01 1.24051e+00 3511 2024 4 2.23017e+01 9.65254e-01 812