YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 3.75771e+00 1.27494e-01 70 2000 3 3.86752e+00 6.15987e-01 437 2000 4 5.18226e+00 4.58232e-01 228 2000 5 9.30609e+00 1.93177e+00 165 2000 6 1.44800e+01 1.21598e+00 239 2000 7 1.74341e+01 1.04499e+00 345 2000 8 1.90333e+01 7.96272e-01 304 2000 9 1.63793e+01 1.13420e+00 387 2000 10 1.32101e+01 1.31472e+00 274 2000 11 9.59245e+00 5.23026e-01 445 2000 12 7.26736e+00 1.05197e+00 571 2001 1 4.69809e+00 4.01777e-01 468 2001 2 4.13094e+00 2.77900e-01 320 2001 3 3.59128e+00 1.51695e-01 254 2001 4 5.54148e+00 1.89752e+00 308 2001 5 1.12178e+01 6.66308e-01 320 2001 6 1.44561e+01 8.53583e-01 171 2001 7 1.57963e+01 1.41982e+00 508 2001 8 1.76437e+01 9.00459e-01 302 2001 9 1.64918e+01 1.15549e+00 653 2001 10 1.12619e+01 7.59190e-01 375 2001 11 8.75092e+00 2.10310e+00 476 2001 12 7.99779e+00 8.39219e-01 475 2002 1 6.10102e+00 6.83125e-01 492 2002 2 4.72371e+00 5.82654e-01 295 2002 3 4.39556e+00 7.17155e-01 198 2002 4 7.08563e+00 1.56218e+00 402 2002 5 8.54634e+00 1.52022e+00 324 2002 6 1.31738e+01 2.92434e+00 309 2002 7 1.77689e+01 1.80415e+00 1745 2002 8 1.90591e+01 1.56227e+00 1747 2002 9 1.67962e+01 1.87235e+00 1506 2002 10 1.40198e+01 1.51765e+00 1807 2002 11 1.00791e+01 1.00019e+00 1444 2002 12 6.96900e+00 8.64715e-01 2064 2003 1 4.26773e+00 6.88096e-01 976 2003 2 2.88580e+00 6.89228e-01 697 2003 3 2.57186e+00 1.01212e+00 756 2003 4 4.43084e+00 1.27823e+00 761 2003 5 9.33827e+00 2.53013e+00 615 2003 6 1.32366e+01 2.56435e+00 803 2003 7 1.76825e+01 1.42364e+00 1327 2003 8 1.88679e+01 1.30640e+00 1628 2003 9 1.70236e+01 9.05725e-01 1700 2003 10 1.28607e+01 1.85887e+00 1702 2003 11 9.08202e+00 1.13387e+00 1257 2003 12 6.26974e+00 1.02607e+00 1708 2004 1 3.60869e+00 1.49808e+00 1182 2004 2 2.17832e+00 6.51646e-01 1350 2004 3 2.97494e+00 4.51251e-01 588 2004 4 4.36063e+00 1.48319e+00 791 2004 5 9.69895e+00 2.70070e+00 768 2004 6 1.43954e+01 1.79831e+00 1280 2004 7 1.73780e+01 1.45804e+00 1713 2004 8 1.74003e+01 1.29571e+00 2149 2004 9 1.63031e+01 1.22512e+00 1502 2004 10 1.36503e+01 1.43674e+00 1560 2004 11 9.43041e+00 1.23688e+00 2646 2004 12 6.82777e+00 1.21893e+00 1693 2005 1 4.37409e+00 1.05681e+00 614 2005 2 2.63080e+00 7.59172e-01 829 2005 3 2.43586e+00 5.42451e-01 1032 2005 4 6.48887e+00 1.31577e+00 1568 2005 5 8.56593e+00 1.31196e+00 820 2005 6 1.42078e+01 2.78918e+00 511 2005 7 1.83502e+01 1.46028e+00 1556 2005 8 1.90159e+01 1.26871e+00 2112 2005 9 1.71006e+01 1.52059e+00 1628 2005 10 1.19221e+01 5.93080e-01 729 2005 11 9.72845e+00 9.86684e-01 1735 2005 12 6.45064e+00 1.33804e+00 2005 2006 1 4.87006e+00 6.28190e-01 1205 2006 2 3.78379e+00 1.02371e+00 830 2006 3 3.51154e+00 7.80116e-01 1178 2006 4 6.31428e+00 1.36483e+00 1615 2006 5 9.65397e+00 1.69567e+00 628 2006 6 1.49654e+01 1.92333e+00 452 2006 7 1.77758e+01 1.82640e+00 1178 2006 8 1.79167e+01 1.31109e+00 1685 2006 9 1.69959e+01 1.22267e+00 1897 2006 10 1.27156e+01 1.62221e+00 1816 2006 11 1.00844e+01 8.94648e-01 1084 2006 12 8.24975e+00 9.86624e-01 2046 2007 1 6.23915e+00 1.07314e+00 1248 2007 2 4.11172e+00 4.92352e-01 1387 2007 3 3.96857e+00 7.26271e-01 1378 2007 4 4.35910e+00 2.11008e+00 823 2007 5 9.49805e+00 2.26963e+00 1352 2007 6 1.45833e+01 2.29501e+00 1252 2007 7 1.80765e+01 1.97657e+00 1559 2007 8 1.76982e+01 2.01273e+00 1841 2007 9 1.60014e+01 1.12601e+00 1511 2007 10 1.32320e+01 1.07239e+00 1557 2007 11 9.73631e+00 1.23178e+00 1252 2007 12 6.42755e+00 1.11342e+00 1417 2008 1 4.15959e+00 8.39985e-01 1157 2008 2 3.11145e+00 6.27528e-01 972 2008 3 3.12891e+00 4.27751e-01 1264 2008 4 6.51654e+00 2.22830e+00 1538 2008 5 9.82426e+00 1.67747e+00 1395 2008 6 1.64066e+01 1.30697e+00 1558 2008 7 1.86473e+01 1.23265e+00 2364 2008 8 1.91268e+01 1.36488e+00 2820 2008 9 1.68412e+01 2.07521e+00 1777 2008 10 1.30491e+01 1.34596e+00 2200 2008 11 9.30737e+00 1.23360e+00 1696 2008 12 6.89853e+00 1.16561e+00 1665 2009 1 4.24360e+00 1.08889e+00 1441 2009 2 2.88594e+00 1.67629e-01 888 2009 3 3.23835e+00 5.85835e-01 1017 2009 4 5.19104e+00 1.28351e+00 1187 2009 5 1.01784e+01 2.04679e+00 1023 2009 6 1.37085e+01 1.93569e+00 706 2009 7 1.72190e+01 1.32048e+00 2121 2009 8 1.94184e+01 1.69166e+00 1944 2009 9 1.65885e+01 9.35392e-01 2395 2009 10 1.21238e+01 1.24359e+00 1840 2009 11 1.04303e+01 1.00144e+00 1412 2009 12 7.72276e+00 1.09157e+00 1983 2010 1 4.26415e+00 7.44587e-01 1452 2010 2 2.90453e+00 1.29179e+00 1203 2010 3 3.82482e+00 9.52141e-01 885 2010 4 7.67290e+00 8.22321e-01 1362 2010 5 1.16981e+01 2.66734e+00 1232 2010 6 1.62881e+01 1.77479e+00 1027 2010 7 1.94397e+01 1.83880e+00 2404 2010 8 1.79307e+01 1.35574e+00 1781 2010 9 1.71476e+01 1.55871e+00 2012 2010 10 1.31423e+01 1.51580e+00 2059 2010 11 9.50345e+00 1.20843e+00 1660 2010 12 6.64044e+00 1.47584e+00 1825 2011 1 4.70381e+00 9.33783e-01 1080 2011 2 3.02724e+00 7.93394e-01 1266 2011 3 3.55032e+00 7.07982e-01 1464 2011 4 4.82924e+00 1.04512e+00 853 2011 5 9.97178e+00 2.46680e+00 869 2011 6 1.47398e+01 2.48580e+00 1278 2011 7 1.91858e+01 1.43762e+00 2137 2011 8 1.86923e+01 1.01408e+00 1898 2011 9 1.64912e+01 9.51588e-01 1857 2011 10 1.45053e+01 1.03353e+00 1440 2011 11 1.11517e+01 8.84109e-01 1485 2011 12 8.69207e+00 1.02840e+00 1770 2012 1 6.41200e+00 1.17127e+00 1754 2012 2 4.88560e+00 7.64784e-01 1645 2012 3 5.73737e+00 9.19981e-01 451 2012 4 7.00746e+00 1.25891e+00 2092 2012 5 1.27896e+01 3.31264e+00 1099 2012 6 1.63427e+01 2.49351e+00 1081 2012 7 1.95355e+01 1.12585e+00 2309 2012 8 1.99487e+01 1.31515e+00 2200 2012 9 1.70420e+01 1.41748e+00 2274 2012 10 1.31926e+01 1.22534e+00 1809 2012 11 1.04233e+01 1.16992e+00 1807 2012 12 8.00333e+00 1.25412e+00 1021 2013 1 6.09174e+00 1.25490e+00 2081 2013 2 4.60919e+00 9.85694e-01 982 2013 3 3.84339e+00 8.16889e-01 724 2013 4 6.58203e+00 2.24141e+00 1616 2013 5 1.09495e+01 1.82251e+00 1337 2013 6 1.51901e+01 1.95618e+00 1585 2013 7 2.12941e+01 1.98145e+00 1834 2013 8 1.86431e+01 1.59046e+00 2196 2013 9 1.66224e+01 1.36743e+00 2104 2013 10 1.45106e+01 1.41167e+00 2190 2013 11 1.00982e+01 9.56726e-01 1661 2013 12 6.99027e+00 9.99614e-01 1195 2014 1 4.62474e+00 7.52766e-01 1116 2014 2 2.75737e+00 8.75351e-01 908 2014 3 2.75367e+00 2.16012e-01 942 2014 4 4.80265e+00 1.00481e+00 1362 2014 5 1.00017e+01 2.32983e+00 1054 2014 6 1.55472e+01 1.69907e+00 1550 2014 7 1.63307e+01 1.49384e+00 1689 2014 8 1.87484e+01 1.31535e+00 2638 2014 9 1.72809e+01 1.80016e+00 2234 2014 10 1.44586e+01 1.39286e+00 1586 2014 11 1.04178e+01 8.71764e-01 1226 2014 12 7.46159e+00 1.14386e+00 1069 2015 1 5.29897e+00 1.15607e+00 1449 2015 2 3.22276e+00 1.45034e+00 501 2015 3 2.35574e+00 3.29875e-01 772 2015 4 4.78719e+00 2.01133e+00 1075 2015 5 1.06352e+01 9.01812e-01 627 2015 6 1.43680e+01 1.87767e+00 894 2015 7 1.93977e+01 1.90153e+00 2342 2015 8 1.93918e+01 1.54919e+00 2951 2015 9 1.84982e+01 1.46999e+00 2001 2015 10 1.35330e+01 1.16762e+00 1985 2015 11 1.11012e+01 1.26293e+00 1722 2015 12 8.89942e+00 1.61605e+00 1106 2016 1 6.67534e+00 1.23259e+00 1661 2016 2 4.77019e+00 7.27751e-01 1366 2016 3 5.13528e+00 9.38292e-01 1261 2016 4 6.54356e+00 9.74174e-01 2216 2016 5 9.40909e+00 1.68796e+00 734 2016 6 1.53465e+01 1.51846e+00 1494 2016 7 1.91863e+01 2.47465e+00 1768 2016 8 1.98214e+01 1.36440e+00 2852 2016 9 1.79605e+01 1.31907e+00 1944 2016 10 1.48468e+01 1.27053e+00 2103 2016 11 1.14132e+01 1.22605e+00 2120 2016 12 8.70214e+00 1.23649e+00 1874 2017 1 6.37145e+00 9.16749e-01 1423 2017 2 5.08173e+00 7.14207e-01 1228 2017 3 4.14128e+00 6.14167e-01 1573 2017 4 5.35792e+00 1.87013e+00 914 2017 5 9.46634e+00 2.18856e+00 958 2017 6 1.42540e+01 1.88012e+00 727 2017 7 1.76735e+01 1.41991e+00 1922 2017 8 1.81181e+01 1.23251e+00 2617 2017 9 1.66017e+01 1.27063e+00 1224 2017 10 1.52447e+01 1.26453e+00 1606 2017 11 1.00318e+01 1.11520e+00 1931 2017 12 7.39927e+00 1.08054e+00 1899 2018 1 3.82482e+00 9.33753e-01 1222 2018 2 3.71862e+00 8.91406e-01 991 2018 3 3.61394e+00 1.00303e+00 862 2018 4 5.04811e+00 1.32203e+00 1193 2018 5 1.08181e+01 2.20584e+00 369 2018 6 1.54494e+01 1.82868e+00 1293 2018 7 1.92002e+01 1.63601e+00 1998 2018 8 2.06621e+01 1.43032e+00 2258 2018 9 1.94406e+01 2.28837e+00 1967 2018 10 1.39336e+01 1.49451e+00 1895 2018 11 1.00771e+01 1.20674e+00 1436 2018 12 6.78789e+00 8.97720e-01 1229 2019 1 5.09492e+00 1.12637e+00 1515 2019 2 3.63172e+00 4.70798e-01 1195 2019 3 3.26177e+00 6.67432e-01 1380 2019 4 4.96947e+00 1.65515e+00 1000 2019 5 1.00512e+01 7.18268e-01 803 2019 6 1.39577e+01 1.89740e+00 1112 2019 7 2.01071e+01 1.77018e+00 2925 2019 8 1.86435e+01 1.68880e+00 2794 2019 9 1.75643e+01 7.94188e-01 3023 2019 10 1.40313e+01 1.06277e+00 1656 2019 11 1.07738e+01 1.32381e+00 2326 2019 12 6.75170e+00 9.91803e-01 2028 2020 1 5.50385e+00 6.99125e-01 1997 2020 2 4.53300e+00 3.46636e-01 2103 2020 3 5.19131e+00 6.91233e-01 2143 2020 4 5.89859e+00 5.35865e-01 1608 2020 5 9.74336e+00 2.15171e+00 2189 2020 6 1.59686e+01 2.33489e+00 2486 2020 7 1.98847e+01 1.78126e+00 1909 2020 8 2.01132e+01 1.14475e+00 1518 2020 9 1.74563e+01 1.34965e+00 2873 2020 10 1.44911e+01 1.21353e+00 2526 2020 11 1.06701e+01 1.15905e+00 1856 2020 12 7.78156e+00 9.89536e-01 1976 2021 1 5.21602e+00 1.03063e+00 1659 2021 2 3.87289e+00 4.50941e-01 1524 2021 3 4.73285e+00 8.55196e-01 2527 2021 4 6.88150e+00 1.09740e+00 1774 2021 5 1.13685e+01 1.86655e+00 1873 2021 6 1.61892e+01 2.07720e+00 2017 2021 7 1.93739e+01 1.84769e+00 1787 2021 8 2.06680e+01 1.70270e+00 1583 2021 9 1.83910e+01 9.47149e-01 2357 2021 10 1.58904e+01 1.32884e+00 2254 2021 11 1.17684e+01 1.08758e+00 2774 2021 12 9.42384e+00 6.55142e-01 1673 2022 1 6.64571e+00 1.07111e+00 1955 2022 2 4.90942e+00 3.30940e-01 2048 2022 3 5.01921e+00 7.33292e-01 1885 2022 4 6.82293e+00 8.12598e-01 1263 2022 5 1.07662e+01 2.53130e+00 2054 2022 6 1.60262e+01 1.60835e+00 2759 2022 7 1.76493e+01 8.08286e-01 2487 2022 8 1.99666e+01 1.39109e+00 2550 2022 9 1.79051e+01 1.60436e+00 2887 2022 10 1.43649e+01 5.59053e-01 2398 2022 11 1.20572e+01 1.39404e+00 3464 2022 12 8.34923e+00 1.26751e+00 2200 2023 1 5.49808e+00 6.36122e-01 1336 2023 2 5.16237e+00 3.78445e-01 1072 2023 3 4.95090e+00 6.47602e-01 1877 2023 4 7.08507e+00 1.38432e+00 1702 2023 5 1.21596e+01 1.50972e+00 3628 2023 6 1.67376e+01 1.90531e+00 1517 2023 7 2.04269e+01 1.44148e+00 2502 2023 8 1.80244e+01 9.26478e-01 2309 2023 9 1.91700e+01 1.77830e+00 2398 2023 10 1.55721e+01 1.57193e+00 1892 2023 11 1.11025e+01 1.14842e+00 2932 2023 12 8.26251e+00 8.32335e-01 2355 2024 1 5.94855e+00 9.32867e-01 1944 2024 2 4.17891e+00 3.49903e-01 2478 2024 3 4.95525e+00 4.77820e-01 1487 2024 4 5.37531e+00 3.77582e-02 64