YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.90872e+01 3.09147e-01 171 2000 3 2.06123e+01 1.36727e+00 765 2000 4 2.15638e+01 1.37937e+00 517 2000 5 2.58817e+01 1.81390e+00 557 2000 6 2.75402e+01 1.41659e+00 513 2000 7 2.82122e+01 1.26616e+00 428 2000 8 2.95934e+01 3.07285e-01 214 2000 9 2.73558e+01 1.07145e+00 268 2000 10 2.32122e+01 1.84955e+00 733 2000 11 2.23460e+01 1.50648e+00 301 2000 12 1.96026e+01 1.25299e+00 72 2001 1 1.17693e+01 4.32128e-02 7 2001 2 1.84094e+01 2.20855e+00 446 2001 3 1.57934e+01 1.44284e+00 280 2001 4 2.17876e+01 2.05120e+00 741 2001 5 2.55864e+01 1.07870e+00 557 2001 6 2.80763e+01 9.32339e-01 130 2001 7 2.91206e+01 1.00348e+00 266 2001 8 2.91588e+01 2.21473e+00 416 2001 9 2.65098e+01 1.64056e+00 227 2001 10 2.33143e+01 1.90004e+00 327 2001 11 1.97686e+01 1.21155e+00 782 2001 12 1.86330e+01 2.93902e+00 480 2002 1 1.79333e+01 2.09860e+00 256 2002 2 1.54675e+01 2.94954e+00 364 2002 3 2.02774e+01 1.68533e+00 256 2002 4 2.44944e+01 2.44723e+00 537 2002 5 2.57617e+01 2.04574e+00 881 2002 6 2.81750e+01 1.15675e+00 512 2002 7 2.92431e+01 1.52658e+00 1270 2002 8 2.84972e+01 1.58786e+00 1730 2002 9 2.84062e+01 1.25411e+00 1510 2002 10 2.67316e+01 2.37838e+00 2571 2002 11 1.99247e+01 2.55903e+00 1447 2002 12 1.42823e+01 8.21878e-01 263 2003 1 1.13294e+01 1.54606e+00 942 2003 2 1.51900e+01 1.94506e+00 1100 2003 3 2.13129e+01 1.53830e+00 1455 2003 4 2.17987e+01 2.55244e+00 2524 2003 5 2.70966e+01 1.52116e+00 2711 2003 6 2.84027e+01 1.50946e+00 1590 2003 7 2.95145e+01 1.69492e+00 1107 2003 8 2.85868e+01 1.31039e+00 1993 2003 9 2.71080e+01 1.27585e+00 1795 2003 10 2.41024e+01 1.27174e+00 2463 2003 11 2.13600e+01 2.26740e+00 2493 2003 12 1.39805e+01 9.83215e-01 279 2004 1 1.38946e+01 1.82815e+00 1471 2004 2 1.38744e+01 1.80165e+00 616 2004 3 1.89751e+01 2.31283e+00 2580 2004 4 2.03587e+01 2.23453e+00 2442 2004 5 2.62616e+01 1.95507e+00 3456 2004 6 2.96268e+01 1.32079e+00 1558 2004 7 2.97943e+01 1.66270e+00 2179 2004 8 2.94061e+01 1.67916e+00 2063 2004 9 2.64864e+01 2.00278e+00 1735 2004 10 2.46707e+01 2.23808e+00 2498 2004 11 2.13554e+01 3.00446e+00 1919 2004 12 1.68357e+01 1.95402e+00 688 2005 1 1.51079e+01 2.85981e+00 1123 2005 2 1.52038e+01 1.78957e+00 1309 2005 3 1.71372e+01 2.18505e+00 1888 2005 4 2.02493e+01 1.23854e+00 2731 2005 5 2.53165e+01 2.11441e+00 2830 2005 6 2.79160e+01 1.79072e+00 1843 2005 7 3.03355e+01 1.91791e+00 2420 2005 8 3.07736e+01 2.13486e+00 1743 2005 9 2.79716e+01 1.34798e+00 2511 2005 10 2.59281e+01 2.00337e+00 1724 2005 11 2.06412e+01 1.98732e+00 1573 2005 12 1.46494e+01 1.55484e+00 1039 2006 1 1.52743e+01 2.40054e+00 1505 2006 2 1.45241e+01 1.85974e+00 1324 2006 3 1.87759e+01 2.01110e+00 3051 2006 4 2.30952e+01 2.38703e+00 2923 2006 5 2.54011e+01 2.35659e+00 2884 2006 6 2.82548e+01 1.39481e+00 2802 2006 7 2.98109e+01 1.69492e+00 2689 2006 8 3.01988e+01 1.28304e+00 2226 2006 9 2.83297e+01 1.86663e+00 2662 2006 10 2.36089e+01 2.38338e+00 2184 2006 11 1.89892e+01 1.97462e+00 1114 2006 12 1.64983e+01 1.75848e+00 771 2007 1 1.44036e+01 2.94275e+00 887 2007 2 1.45120e+01 2.14484e+00 1337 2007 3 1.94502e+01 2.41004e+00 2791 2007 4 2.12121e+01 2.47981e+00 2040 2007 5 2.40901e+01 1.51257e+00 2652 2007 6 2.80161e+01 1.52757e+00 2126 2007 7 3.04167e+01 1.58003e+00 1734 2007 8 3.06648e+01 1.22481e+00 2043 2007 9 2.80516e+01 1.48668e+00 1937 2007 10 2.58246e+01 1.24738e+00 1598 2007 11 1.86673e+01 1.91510e+00 2590 2007 12 1.80194e+01 2.36286e+00 1531 2008 1 1.40047e+01 2.80075e+00 515 2008 2 1.68800e+01 2.24817e+00 1628 2008 3 1.77033e+01 2.50437e+00 2111 2008 4 2.20771e+01 2.09905e+00 2465 2008 5 2.50535e+01 1.78871e+00 2709 2008 6 2.90248e+01 1.21400e+00 2399 2008 7 2.99623e+01 1.45773e+00 1453 2008 8 2.89046e+01 1.56771e+00 1444 2008 9 2.72089e+01 2.24089e+00 2247 2008 10 2.30615e+01 2.77896e+00 2481 2008 11 1.67441e+01 3.17635e+00 1655 2008 12 1.61174e+01 2.24156e+00 1535 2009 1 1.52322e+01 2.46125e+00 1329 2009 2 1.45040e+01 2.21249e+00 1548 2009 3 1.88549e+01 2.99104e+00 2273 2009 4 2.19856e+01 2.27050e+00 2108 2009 5 2.63514e+01 1.59336e+00 2458 2009 6 2.90654e+01 1.56169e+00 2260 2009 7 2.89656e+01 1.52580e+00 1574 2009 8 2.96169e+01 1.87722e+00 2044 2009 9 2.85258e+01 1.34720e+00 2146 2009 10 2.63356e+01 2.81821e+00 2334 2009 11 1.89970e+01 1.96070e+00 1554 2009 12 1.35596e+01 2.76571e+00 280 2010 1 1.32859e+01 2.89795e+00 918 2010 2 1.12356e+01 1.66791e+00 1395 2010 3 1.56402e+01 2.54052e+00 1958 2010 4 2.19130e+01 1.77219e+00 2262 2010 5 2.69433e+01 1.73944e+00 3162 2010 6 3.03634e+01 1.47239e+00 2669 2010 7 2.99657e+01 1.77859e+00 2679 2010 8 2.99536e+01 2.27683e+00 1313 2010 9 2.91062e+01 1.89507e+00 2316 2010 10 2.43353e+01 1.61458e+00 3683 2010 11 1.95445e+01 1.76739e+00 2371 2010 12 1.35937e+01 2.33457e+00 919 2011 1 1.18947e+01 1.55149e+00 1063 2011 2 1.66620e+01 2.90810e+00 1322 2011 3 1.97299e+01 2.21798e+00 2413 2011 4 2.39453e+01 1.96484e+00 3648 2011 5 2.62338e+01 2.27868e+00 3980 2011 6 2.94692e+01 1.56144e+00 2324 2011 7 2.96852e+01 1.39984e+00 1873 2011 8 3.03534e+01 1.47260e+00 2570 2011 9 2.81472e+01 1.29676e+00 2825 2011 10 2.24463e+01 2.60164e+00 2340 2011 11 1.89129e+01 2.01446e+00 2044 2011 12 1.61056e+01 1.60274e+00 1538 2012 1 1.56124e+01 2.12924e+00 1725 2012 2 1.81091e+01 1.72471e+00 505 2012 3 2.19905e+01 2.17513e+00 2768 2012 4 2.31117e+01 2.04018e+00 3086 2012 5 2.69833e+01 1.14381e+00 3202 2012 6 2.77855e+01 1.65276e+00 1765 2012 7 2.96030e+01 2.06525e+00 2030 2012 8 2.93679e+01 1.55815e+00 1860 2012 9 2.80693e+01 1.64793e+00 1936 2012 10 2.43016e+01 1.78271e+00 1984 2012 11 1.76833e+01 1.50882e+00 2026 2012 12 1.71183e+01 2.34277e+00 1716 2013 1 1.66330e+01 2.43576e+00 1493 2013 2 1.53363e+01 2.17454e+00 1507 2013 3 1.57741e+01 2.07693e+00 2569 2013 4 2.17060e+01 2.03984e+00 2167 2013 5 2.50070e+01 2.51383e+00 2647 2013 6 2.83037e+01 1.90495e+00 2226 2013 7 2.84561e+01 1.89761e+00 1205 2013 8 3.00265e+01 1.90584e+00 2166 2013 9 2.90895e+01 1.90950e+00 2277 2013 10 2.44327e+01 2.65146e+00 2620 2013 11 2.02525e+01 2.45511e+00 803 2013 12 1.76078e+01 2.53214e+00 1405 2014 1 1.29260e+01 1.50991e+00 728 2014 2 1.51296e+01 2.26711e+00 1239 2014 3 1.76270e+01 1.74604e+00 1897 2014 4 2.21073e+01 2.45049e+00 2154 2014 5 2.52378e+01 2.03059e+00 2498 2014 6 2.85548e+01 1.93020e+00 2080 2014 7 3.03171e+01 1.67751e+00 1863 2014 8 2.95831e+01 1.63620e+00 2180 2014 9 2.79459e+01 1.72729e+00 1068 2014 10 2.45004e+01 2.32808e+00 3051 2014 11 1.69278e+01 2.43935e+00 1235 2014 12 1.63433e+01 1.78505e+00 1732 2015 1 1.41480e+01 1.51470e+00 1489 2015 2 1.33702e+01 1.74487e+00 1573 2015 3 1.97560e+01 2.68301e+00 1645 2015 4 2.37078e+01 1.85158e+00 1391 2015 5 2.66897e+01 2.48802e+00 3731 2015 6 2.99707e+01 1.41496e+00 2225 2015 7 2.93518e+01 1.44678e+00 1484 2015 8 3.01563e+01 1.72905e+00 2020 2015 9 2.71888e+01 1.92011e+00 1358 2015 10 2.39555e+01 1.78910e+00 1956 2015 11 2.22610e+01 3.47929e+00 2119 2015 12 1.86763e+01 2.94662e+00 963 2016 1 1.34188e+01 1.35194e+00 1149 2016 2 1.46266e+01 2.10642e+00 1719 2016 3 1.86224e+01 2.32813e+00 1257 2016 4 2.24785e+01 2.26180e+00 2102 2016 5 2.60779e+01 2.04909e+00 2777 2016 6 2.99135e+01 1.58640e+00 2511 2016 7 3.13831e+01 1.39705e+00 2935 2016 8 3.03498e+01 1.21527e+00 2011 2016 9 2.90724e+01 1.32719e+00 2216 2016 10 2.46775e+01 1.73975e+00 2569 2016 11 1.95632e+01 2.47061e+00 2267 2016 12 1.77689e+01 2.31015e+00 1499 2017 1 1.57575e+01 2.42392e+00 1172 2017 2 1.83075e+01 1.89750e+00 2228 2017 3 1.95185e+01 3.16011e+00 2481 2017 4 2.30818e+01 2.18761e+00 2612 2017 5 2.52784e+01 2.13845e+00 2336 2017 6 2.87940e+01 2.06537e+00 1253 2017 7 3.00449e+01 1.69906e+00 1519 2017 8 2.99206e+01 1.49151e+00 1890 2017 9 2.80733e+01 1.62481e+00 2252 2017 10 2.44623e+01 3.29321e+00 2716 2017 11 1.96156e+01 1.63822e+00 2517 2017 12 1.77652e+01 3.20174e+00 1145 2018 1 1.18215e+01 2.01908e+00 891 2018 2 2.09114e+01 3.56896e+00 1876 2018 3 1.77903e+01 2.61766e+00 2513 2018 4 2.16550e+01 1.67208e+00 2545 2018 5 2.52012e+01 2.00408e+00 1925 2018 6 2.93614e+01 1.84358e+00 2057 2018 7 2.95507e+01 1.84788e+00 1709 2018 8 3.03332e+01 1.64687e+00 1518 2018 9 2.99544e+01 1.46350e+00 2778 2018 10 2.61896e+01 2.62110e+00 2651 2018 11 1.83133e+01 3.30669e+00 1080 2018 12 1.59276e+01 2.27612e+00 1291 2019 1 1.49732e+01 2.72565e+00 1272 2019 2 1.91431e+01 3.18440e+00 1188 2019 3 1.88339e+01 2.21589e+00 2223 2019 4 2.24638e+01 2.19622e+00 2177 2019 5 2.79089e+01 1.94657e+00 3322 2019 6 2.91703e+01 1.37871e+00 1910 2019 7 2.92233e+01 2.11091e+00 1673 2019 8 2.99943e+01 1.15331e+00 1764 2019 9 2.89774e+01 1.48807e+00 3054 2019 10 2.55876e+01 1.96716e+00 2265 2019 11 1.87673e+01 2.37260e+00 2134 2019 12 1.66345e+01 1.99335e+00 1770 2020 1 1.58214e+01 2.40743e+00 1934 2020 2 1.53359e+01 1.84189e+00 1729 2020 3 2.26878e+01 3.84015e+00 2630 2020 4 2.35395e+01 1.32268e+00 1675 2020 5 2.49536e+01 2.06212e+00 2950 2020 6 2.95442e+01 1.56560e+00 2201 2020 7 3.01246e+01 1.37555e+00 1800 2020 8 3.12815e+01 1.21904e+00 1452 2020 9 2.84945e+01 2.28263e+00 1367 2020 10 2.57205e+01 1.52337e+00 2325 2020 11 2.08162e+01 2.12923e+00 2617 2020 12 1.44750e+01 1.83084e+00 2026 2021 1 1.48835e+01 2.34747e+00 1621 2021 2 1.73044e+01 2.66677e+00 1870 2021 3 1.97189e+01 2.73197e+00 2413 2021 4 2.20736e+01 2.66043e+00 2377 2021 5 2.53233e+01 2.01327e+00 2573 2021 6 2.82077e+01 1.45117e+00 1285 2021 7 2.95018e+01 1.10514e+00 1169 2021 8 2.99251e+01 1.68507e+00 1775 2021 9 2.82487e+01 1.35656e+00 2062 2021 10 2.57432e+01 2.29887e+00 2003 2021 11 1.76914e+01 1.75901e+00 2482 2021 12 1.81298e+01 2.05904e+00 2650 2022 1 1.48250e+01 3.12237e+00 2371 2022 2 1.71245e+01 3.59552e+00 2413 2022 3 2.02038e+01 1.49515e+00 2768 2022 4 2.30302e+01 2.07184e+00 1789 2022 5 2.70294e+01 1.64000e+00 2934 2022 6 2.92470e+01 1.37906e+00 2143 2022 7 3.06008e+01 1.25892e+00 1919 2022 8 3.08513e+01 1.54099e+00 1823 2022 9 2.82342e+01 2.14927e+00 1744 2022 10 2.28774e+01 2.45776e+00 2966 2022 11 2.17831e+01 2.67367e+00 1713 2022 12 1.81245e+01 3.37322e+00 2456 2023 1 1.54370e+01 2.08268e+00 2412 2023 2 1.76117e+01 2.47299e+00 1974 2023 3 2.09766e+01 2.52239e+00 2619 2023 4 2.38506e+01 1.38058e+00 1673 2023 5 2.56406e+01 2.09051e+00 2417 2023 6 2.79001e+01 1.80353e+00 2257 2023 7 3.09831e+01 1.42316e+00 2604 2023 8 3.10371e+01 1.17235e+00 2569 2023 9 2.89008e+01 1.49166e+00 2349 2023 10 2.32676e+01 1.78857e+00 2478 2023 11 1.99643e+01 2.21561e+00 1572 2023 12 1.42514e+01 1.49188e+00 1377 2024 1 1.38505e+01 1.80127e+00 1315 2024 2 1.59298e+01 1.37596e+00 1852 2024 3 2.04796e+01 1.84721e+00 1687 2024 4 2.24715e+01 6.89828e-01 256