YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.66812e+01 2.23472e-01 88 2000 3 1.98589e+01 1.31070e+00 645 2000 4 2.17062e+01 1.39744e+00 640 2000 5 2.53429e+01 2.09937e+00 767 2000 6 2.76585e+01 7.43213e-01 416 2000 7 2.89880e+01 7.04706e-01 386 2000 8 2.94581e+01 6.46260e-01 312 2000 9 2.70678e+01 1.22373e+00 317 2000 10 2.34020e+01 1.17971e+00 883 2000 11 2.16175e+01 2.27898e+00 600 2000 12 1.50692e+01 1.83078e+00 349 2001 1 1.24181e+01 1.25270e-01 128 2001 2 1.71123e+01 9.16003e-01 284 2001 3 1.65823e+01 1.50405e+00 576 2001 4 2.03298e+01 1.79510e+00 766 2001 5 2.44304e+01 1.45889e+00 622 2001 6 2.77553e+01 7.48170e-01 286 2001 7 2.94043e+01 1.30374e+00 175 2001 8 2.87435e+01 1.00710e+00 534 2001 9 2.75246e+01 1.26800e+00 280 2001 10 2.30617e+01 1.40341e+00 645 2001 11 2.02375e+01 4.20511e-01 710 2001 12 1.90329e+01 2.16962e+00 637 2002 1 1.39113e+01 3.10237e-01 111 2002 2 1.53120e+01 1.16960e+00 347 2002 3 1.74479e+01 2.04440e+00 160 2002 4 2.38912e+01 2.08425e+00 497 2002 5 2.60919e+01 1.27619e+00 742 2002 6 2.78772e+01 8.34712e-01 540 2002 7 2.88725e+01 1.62202e+00 1746 2002 8 2.90784e+01 1.11797e+00 2123 2002 9 2.84625e+01 1.14751e+00 2206 2002 10 2.71630e+01 1.82483e+00 2697 2002 11 2.15141e+01 2.68952e+00 2356 2002 12 1.57536e+01 1.11302e+00 1228 2003 1 1.28044e+01 1.30316e+00 1914 2003 2 1.42539e+01 1.31428e+00 854 2003 3 2.03316e+01 1.01329e+00 1327 2003 4 2.13303e+01 1.74797e+00 2903 2003 5 2.65616e+01 1.35774e+00 2702 2003 6 2.81049e+01 1.32822e+00 1787 2003 7 2.92418e+01 1.83763e+00 1338 2003 8 2.88551e+01 1.38440e+00 1983 2003 9 2.83666e+01 9.76711e-01 1992 2003 10 2.44682e+01 9.00680e-01 2759 2003 11 2.19636e+01 1.72641e+00 3156 2003 12 1.56166e+01 1.94408e+00 1527 2004 1 1.36615e+01 8.63778e-01 1539 2004 2 1.38556e+01 1.12284e+00 546 2004 3 1.80417e+01 1.66381e+00 2708 2004 4 1.99280e+01 1.91441e+00 2607 2004 5 2.56424e+01 1.77767e+00 3707 2004 6 2.91727e+01 1.27525e+00 2471 2004 7 2.98565e+01 1.51023e+00 2095 2004 8 2.97344e+01 1.34195e+00 2178 2004 9 2.73128e+01 1.65344e+00 1950 2004 10 2.49736e+01 1.40110e+00 2406 2004 11 2.24027e+01 2.26091e+00 2200 2004 12 1.62251e+01 2.25403e+00 2371 2005 1 1.47418e+01 1.90950e+00 1425 2005 2 1.42331e+01 7.17004e-01 1041 2005 3 1.61435e+01 1.29530e+00 1702 2005 4 2.01729e+01 8.90956e-01 2620 2005 5 2.45847e+01 2.11738e+00 3135 2005 6 2.85493e+01 1.37419e+00 2079 2005 7 2.98577e+01 1.73278e+00 2516 2005 8 2.97208e+01 1.87884e+00 1857 2005 9 2.82761e+01 9.63075e-01 2896 2005 10 2.56482e+01 2.17899e+00 3503 2005 11 2.05788e+01 1.57534e+00 2119 2005 12 1.54929e+01 1.93673e+00 1469 2006 1 1.49236e+01 1.02829e+00 1539 2006 2 1.47878e+01 1.18160e+00 1585 2006 3 1.82293e+01 1.00595e+00 2535 2006 4 2.24779e+01 2.00628e+00 2875 2006 5 2.48725e+01 1.51143e+00 3343 2006 6 2.81758e+01 1.21572e+00 2960 2006 7 3.00018e+01 1.17118e+00 2552 2006 8 3.03680e+01 1.08292e+00 2835 2006 9 2.85231e+01 1.45717e+00 2703 2006 10 2.51225e+01 1.84165e+00 3154 2006 11 1.89036e+01 1.94234e+00 2079 2006 12 1.59601e+01 1.30398e+00 932 2007 1 1.51013e+01 1.47294e+00 996 2007 2 1.39681e+01 7.64168e-01 1273 2007 3 1.80171e+01 1.53528e+00 2638 2007 4 2.05756e+01 1.54565e+00 1911 2007 5 2.41025e+01 9.36918e-01 3984 2007 6 2.74756e+01 1.73101e+00 2890 2007 7 2.98297e+01 1.88925e+00 1731 2007 8 3.05576e+01 1.33313e+00 2704 2007 9 2.87953e+01 1.43363e+00 2325 2007 10 2.63445e+01 8.87361e-01 2049 2007 11 2.00043e+01 1.83960e+00 3251 2007 12 1.79752e+01 1.21166e+00 1537 2008 1 1.44970e+01 1.54421e+00 946 2008 2 1.61267e+01 9.56735e-01 1437 2008 3 1.78246e+01 1.31654e+00 2136 2008 4 2.16096e+01 1.02231e+00 2957 2008 5 2.49188e+01 1.66512e+00 2939 2008 6 2.84923e+01 1.29075e+00 2321 2008 7 2.95472e+01 1.59558e+00 1922 2008 8 2.86130e+01 1.23539e+00 1490 2008 9 2.78565e+01 1.44510e+00 2631 2008 10 2.42622e+01 1.60759e+00 3482 2008 11 1.85921e+01 1.64496e+00 2213 2008 12 1.57315e+01 8.30678e-01 1428 2009 1 1.50892e+01 1.54961e+00 1756 2009 2 1.40933e+01 1.12794e+00 1894 2009 3 1.74383e+01 2.08266e+00 2119 2009 4 2.13338e+01 1.90174e+00 2694 2009 5 2.57651e+01 1.22693e+00 2482 2009 6 2.80636e+01 1.14144e+00 2780 2009 7 2.89475e+01 1.16394e+00 2549 2009 8 3.00004e+01 1.31523e+00 1988 2009 9 2.86015e+01 9.18210e-01 2357 2009 10 2.61480e+01 2.15653e+00 2951 2009 11 2.03837e+01 1.31145e+00 1794 2009 12 1.50480e+01 2.14364e+00 479 2010 1 1.21397e+01 1.73600e+00 1448 2010 2 1.26631e+01 8.79135e-01 1757 2010 3 1.49904e+01 1.95276e+00 1910 2010 4 2.12314e+01 1.43102e+00 2411 2010 5 2.66385e+01 2.16719e+00 3405 2010 6 3.01260e+01 1.43725e+00 2667 2010 7 2.96969e+01 1.43845e+00 2613 2010 8 2.98531e+01 1.68999e+00 1443 2010 9 2.91463e+01 1.19972e+00 2813 2010 10 2.50328e+01 1.03706e+00 4275 2010 11 2.06261e+01 1.36003e+00 2928 2010 12 1.50530e+01 2.95990e+00 2238 2011 1 1.14751e+01 1.01974e+00 1623 2011 2 1.30925e+01 1.65736e+00 736 2011 3 1.85715e+01 1.22692e+00 2200 2011 4 2.34135e+01 1.42704e+00 3629 2011 5 2.57087e+01 1.31498e+00 4137 2011 6 2.92186e+01 1.47872e+00 2446 2011 7 2.96990e+01 1.13806e+00 2030 2011 8 3.07220e+01 1.04402e+00 3078 2011 9 2.84704e+01 1.06701e+00 2601 2011 10 2.44901e+01 1.90470e+00 2837 2011 11 1.93679e+01 1.19459e+00 2322 2011 12 1.71695e+01 8.34871e-01 1436 2012 1 1.55390e+01 9.74791e-01 2041 2012 2 1.61288e+01 1.07029e+00 866 2012 3 2.06507e+01 2.06402e+00 2574 2012 4 2.32719e+01 8.34502e-01 3529 2012 5 2.64994e+01 1.19622e+00 3490 2012 6 2.75699e+01 7.78727e-01 2552 2012 7 2.89760e+01 1.63690e+00 2337 2012 8 2.88255e+01 1.37772e+00 1753 2012 9 2.82626e+01 1.20587e+00 2118 2012 10 2.51005e+01 2.11596e+00 2930 2012 11 1.90294e+01 1.27914e+00 2679 2012 12 1.70798e+01 1.74663e+00 1540 2013 1 1.52959e+01 8.45284e-01 1323 2013 2 1.62220e+01 1.23171e+00 1845 2013 3 1.58721e+01 1.38409e+00 2568 2013 4 2.07593e+01 1.89774e+00 2143 2013 5 2.42819e+01 2.20198e+00 2470 2013 6 2.78399e+01 1.53119e+00 2269 2013 7 2.86093e+01 1.98250e+00 1012 2013 8 3.01849e+01 1.66635e+00 2562 2013 9 2.96373e+01 1.54475e+00 2885 2013 10 2.56465e+01 1.58079e+00 2841 2013 11 2.05456e+01 2.07198e+00 1714 2013 12 1.69862e+01 1.55882e+00 1398 2014 1 1.31359e+01 8.36693e-01 941 2014 2 1.49579e+01 2.01537e+00 1083 2014 3 1.69695e+01 1.21335e+00 1935 2014 4 2.08003e+01 1.71522e+00 2198 2014 5 2.52852e+01 1.41075e+00 2478 2014 6 2.85835e+01 1.70723e+00 2197 2014 7 2.98835e+01 1.28978e+00 2346 2014 8 2.97481e+01 1.12301e+00 3005 2014 9 2.87736e+01 1.39470e+00 1508 2014 10 2.57430e+01 1.57557e+00 3298 2014 11 1.87501e+01 2.17657e+00 2278 2014 12 1.61809e+01 9.84700e-01 1554 2015 1 1.45229e+01 1.33411e+00 1842 2015 2 1.36912e+01 1.11841e+00 1769 2015 3 1.88186e+01 2.29753e+00 1697 2015 4 2.26012e+01 1.71303e+00 1169 2015 5 2.65499e+01 1.61697e+00 3827 2015 6 2.99538e+01 8.34006e-01 2360 2015 7 2.95858e+01 1.38897e+00 1661 2015 8 3.01834e+01 1.58309e+00 2214 2015 9 2.83272e+01 1.68404e+00 1228 2015 10 2.44251e+01 1.16393e+00 2596 2015 11 2.23379e+01 2.42087e+00 2056 2015 12 1.90874e+01 8.47602e-01 1405 2016 1 1.56152e+01 1.92266e+00 1589 2016 2 1.43538e+01 1.24046e+00 1451 2016 3 1.86398e+01 1.75079e+00 1551 2016 4 2.18227e+01 1.83189e+00 2082 2016 5 2.57952e+01 1.25565e+00 3397 2016 6 2.93152e+01 1.21432e+00 2787 2016 7 3.13363e+01 1.03727e+00 2995 2016 8 3.04385e+01 1.07058e+00 2420 2016 9 2.92855e+01 1.14193e+00 2683 2016 10 2.57259e+01 1.79654e+00 2835 2016 11 2.15210e+01 2.23612e+00 2818 2016 12 1.81408e+01 1.52154e+00 1682 2017 1 1.65724e+01 1.25738e+00 1350 2017 2 1.77185e+01 1.48237e+00 1941 2017 3 1.87447e+01 1.70088e+00 2652 2017 4 2.28429e+01 1.30348e+00 3007 2017 5 2.51221e+01 1.22446e+00 2227 2017 6 2.83295e+01 1.69807e+00 1879 2017 7 3.04559e+01 1.42326e+00 1564 2017 8 3.02870e+01 1.38789e+00 2128 2017 9 2.83592e+01 1.32821e+00 2676 2017 10 2.55893e+01 1.90738e+00 3552 2017 11 2.08680e+01 1.33474e+00 3112 2017 12 1.73161e+01 1.96682e+00 1381 2018 1 1.22130e+01 6.95287e-01 1440 2018 2 1.86490e+01 2.14106e+00 744 2018 3 1.85423e+01 1.25692e+00 2788 2018 4 2.11860e+01 1.18930e+00 2333 2018 5 2.48724e+01 1.37618e+00 2142 2018 6 2.87395e+01 1.59495e+00 1729 2018 7 3.00657e+01 7.80093e-01 2052 2018 8 3.01131e+01 1.40190e+00 1735 2018 9 3.04522e+01 1.04776e+00 3262 2018 10 2.73391e+01 2.06417e+00 3004 2018 11 2.08745e+01 1.66296e+00 1111 2018 12 1.64454e+01 1.66426e+00 1142 2019 1 1.58413e+01 1.37304e+00 1565 2019 2 1.66450e+01 2.68463e+00 595 2019 3 1.86472e+01 1.20573e+00 2140 2019 4 2.16830e+01 1.93687e+00 2174 2019 5 2.71266e+01 1.98985e+00 3628 2019 6 2.90788e+01 1.22108e+00 2031 2019 7 3.00973e+01 1.09404e+00 1698 2019 8 3.01822e+01 9.80249e-01 2323 2019 9 2.93087e+01 9.42718e-01 4058 2019 10 2.71982e+01 1.74055e+00 2476 2019 11 1.95193e+01 2.38890e+00 2189 2019 12 1.70966e+01 1.09098e+00 1644 2020 1 1.61817e+01 1.22303e+00 1961 2020 2 1.56757e+01 9.95547e-01 1694 2020 3 2.06396e+01 3.27404e+00 2656 2020 4 2.36297e+01 1.07765e+00 2076 2020 5 2.47758e+01 1.36492e+00 2917 2020 6 2.92390e+01 1.14259e+00 2306 2020 7 2.98318e+01 1.28731e+00 2053 2020 8 3.09239e+01 1.31470e+00 1523 2020 9 2.87316e+01 1.86412e+00 1803 2020 10 2.55639e+01 8.35229e-01 2731 2020 11 2.23450e+01 1.62750e+00 2886 2020 12 1.60969e+01 1.83773e+00 2651 2021 1 1.42778e+01 1.23276e+00 1817 2021 2 1.59526e+01 1.56534e+00 2009 2021 3 1.84676e+01 1.30562e+00 2632 2021 4 2.15528e+01 1.18796e+00 2515 2021 5 2.54120e+01 1.33751e+00 2742 2021 6 2.78974e+01 1.09402e+00 1494 2021 7 2.94532e+01 1.14985e+00 1451 2021 8 3.02465e+01 1.07495e+00 1863 2021 9 2.86920e+01 1.21180e+00 1928 2021 10 2.64286e+01 1.43017e+00 2338 2021 11 1.97489e+01 1.30506e+00 2917 2021 12 1.81343e+01 9.72071e-01 2461 2022 1 1.64410e+01 2.10416e+00 2612 2022 2 1.51994e+01 1.87763e+00 2159 2022 3 1.91536e+01 1.01533e+00 2643 2022 4 2.27932e+01 1.07611e+00 2064 2022 5 2.65156e+01 1.38908e+00 3025 2022 6 2.97945e+01 1.16418e+00 2625 2022 7 3.05897e+01 1.12891e+00 2241 2022 8 3.08336e+01 1.24793e+00 2240 2022 9 2.86943e+01 1.56013e+00 1980 2022 10 2.40061e+01 1.28130e+00 3239 2022 11 2.17241e+01 1.98325e+00 1652 2022 12 1.74485e+01 2.37779e+00 3183 2023 1 1.47771e+01 6.69591e-01 2305 2023 2 1.68313e+01 1.31234e+00 2075 2023 3 2.03799e+01 1.47401e+00 2940 2023 4 2.25133e+01 8.96339e-01 2108 2023 5 2.52948e+01 1.45359e+00 2485 2023 6 2.71810e+01 1.50639e+00 2451 2023 7 2.99655e+01 1.25457e+00 3084 2023 8 3.13171e+01 9.33844e-01 2828 2023 9 2.95253e+01 1.21087e+00 2470 2023 10 2.42952e+01 1.39056e+00 3081 2023 11 2.10263e+01 1.27957e+00 2176 2023 12 1.51907e+01 1.43994e+00 1504 2024 1 1.33620e+01 1.33344e+00 1374 2024 2 1.51025e+01 8.19046e-01 1790 2024 3 1.94296e+01 1.24567e+00 1776 2024 4 2.14258e+01 3.50901e-01 171