YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.87334e+01 3.12294e-01 192 2000 3 2.17771e+01 7.73755e-01 650 2000 4 2.34544e+01 9.08932e-01 833 2000 5 2.54926e+01 1.66885e+00 592 2000 6 2.89676e+01 1.25014e+00 592 2000 7 2.86403e+01 1.47827e+00 649 2000 8 2.94640e+01 1.59061e+00 583 2000 9 2.92154e+01 7.93378e-01 357 2000 10 2.44263e+01 1.47754e+00 1079 2000 11 2.27425e+01 1.55927e+00 502 2000 12 1.73926e+01 1.78020e+00 411 2001 1 1.46273e+01 3.33216e-01 76 2001 2 1.91017e+01 1.86084e+00 310 2001 3 1.91053e+01 1.49580e+00 599 2001 4 2.25613e+01 1.25549e+00 822 2001 5 2.46189e+01 1.68720e+00 812 2001 6 2.94184e+01 9.04769e-01 205 2001 7 2.85962e+01 1.26297e+00 355 2001 8 3.00075e+01 5.24255e-01 461 2001 9 2.82394e+01 1.75498e+00 594 2001 10 2.47563e+01 1.40263e+00 635 2001 11 2.14244e+01 7.74383e-01 710 2001 12 2.25174e+01 9.66266e-01 591 2002 1 1.73062e+01 2.10594e+00 378 2002 2 1.80962e+01 1.12304e+00 436 2002 3 1.98909e+01 1.73211e+00 329 2002 4 2.41951e+01 1.40861e+00 602 2002 5 2.67455e+01 8.23103e-01 822 2002 6 2.77188e+01 8.68407e-01 625 2002 7 2.87497e+01 1.79799e+00 1579 2002 8 2.92371e+01 1.61690e+00 1834 2002 9 2.90539e+01 1.09065e+00 1988 2002 10 2.80557e+01 1.12821e+00 3593 2002 11 2.31970e+01 2.88818e+00 2159 2002 12 1.75363e+01 1.08620e+00 1284 2003 1 1.46199e+01 1.16938e+00 1778 2003 2 1.59763e+01 1.32733e+00 1047 2003 3 2.24032e+01 1.53694e+00 1064 2003 4 2.21814e+01 1.52694e+00 2562 2003 5 2.69791e+01 1.93316e+00 3126 2003 6 2.86709e+01 1.04908e+00 1443 2003 7 2.99093e+01 1.30260e+00 1626 2003 8 2.92782e+01 1.21541e+00 1675 2003 9 2.86416e+01 1.05825e+00 2240 2003 10 2.60514e+01 1.08942e+00 2554 2003 11 2.34656e+01 1.27306e+00 3079 2003 12 1.75869e+01 1.82470e+00 1018 2004 1 1.63179e+01 1.20093e+00 2189 2004 2 1.71263e+01 9.09587e-01 815 2004 3 1.97694e+01 1.57605e+00 2509 2004 4 2.12567e+01 1.31363e+00 2931 2004 5 2.60236e+01 1.49017e+00 3752 2004 6 2.99364e+01 1.23176e+00 3248 2004 7 3.00579e+01 1.25298e+00 2053 2004 8 2.99632e+01 1.19377e+00 1915 2004 9 2.83148e+01 1.90590e+00 2177 2004 10 2.62139e+01 1.28994e+00 3376 2004 11 2.31779e+01 1.43772e+00 2514 2004 12 1.78863e+01 2.61080e+00 1774 2005 1 1.68195e+01 1.32391e+00 1715 2005 2 1.63831e+01 1.33364e+00 2061 2005 3 1.93553e+01 1.67896e+00 1499 2005 4 2.20403e+01 7.37255e-01 3187 2005 5 2.51089e+01 1.35045e+00 3049 2005 6 2.81622e+01 1.19165e+00 1688 2005 7 2.95545e+01 1.46646e+00 2323 2005 8 3.07444e+01 1.50800e+00 2436 2005 9 2.85679e+01 8.59954e-01 3010 2005 10 2.59799e+01 2.18226e+00 2505 2005 11 2.19354e+01 1.10942e+00 1899 2005 12 1.80420e+01 1.97409e+00 1684 2006 1 1.70914e+01 6.42962e-01 1806 2006 2 1.71580e+01 1.07770e+00 1648 2006 3 1.99734e+01 1.19447e+00 2854 2006 4 2.32958e+01 1.61119e+00 3407 2006 5 2.58476e+01 9.17969e-01 3114 2006 6 2.80819e+01 1.26273e+00 2639 2006 7 2.97056e+01 1.07251e+00 2306 2006 8 3.05347e+01 1.16697e+00 2561 2006 9 2.96636e+01 9.81461e-01 2776 2006 10 2.65721e+01 1.66698e+00 3476 2006 11 2.10315e+01 2.01737e+00 1931 2006 12 1.84552e+01 7.89743e-01 977 2007 1 1.90173e+01 9.24612e-01 1338 2007 2 1.62429e+01 1.18989e+00 1677 2007 3 1.96009e+01 1.22117e+00 2608 2007 4 2.19751e+01 1.12852e+00 2689 2007 5 2.43607e+01 9.48545e-01 3344 2007 6 2.71125e+01 1.83491e+00 2932 2007 7 3.02472e+01 1.62412e+00 2264 2007 8 3.06085e+01 8.06436e-01 3089 2007 9 2.91800e+01 1.26579e+00 2562 2007 10 2.71939e+01 1.08754e+00 2157 2007 11 2.17497e+01 1.56477e+00 3119 2007 12 2.10324e+01 1.18423e+00 2713 2008 1 1.71533e+01 1.23413e+00 1399 2008 2 1.88653e+01 8.44745e-01 1917 2008 3 1.95942e+01 1.15993e+00 2118 2008 4 2.29426e+01 9.35325e-01 3408 2008 5 2.58630e+01 1.50510e+00 3284 2008 6 2.91338e+01 1.25823e+00 2513 2008 7 2.96824e+01 1.67362e+00 1337 2008 8 2.97950e+01 9.82321e-01 2057 2008 9 2.85096e+01 1.12727e+00 2371 2008 10 2.55343e+01 1.80128e+00 2785 2008 11 1.95431e+01 1.52534e+00 2650 2008 12 1.81144e+01 9.62468e-01 1799 2009 1 1.76448e+01 1.78744e+00 2649 2009 2 1.60816e+01 1.04111e+00 1948 2009 3 1.91365e+01 1.94416e+00 2526 2009 4 2.27618e+01 1.02015e+00 2767 2009 5 2.64775e+01 1.46504e+00 2716 2009 6 2.91032e+01 1.05648e+00 2593 2009 7 3.01368e+01 1.10249e+00 2168 2009 8 2.99075e+01 1.29009e+00 2481 2009 9 2.96233e+01 1.10146e+00 2430 2009 10 2.76282e+01 2.30897e+00 3252 2009 11 2.22772e+01 1.56396e+00 1671 2009 12 1.78815e+01 1.45840e+00 928 2010 1 1.38586e+01 2.53839e+00 1118 2010 2 1.40177e+01 1.50319e+00 1178 2010 3 1.56217e+01 1.80594e+00 2253 2010 4 2.08308e+01 1.69710e+00 2190 2010 5 2.66217e+01 1.94385e+00 3566 2010 6 2.98173e+01 9.72081e-01 2971 2010 7 2.88501e+01 9.28104e-01 2141 2010 8 2.99654e+01 1.70649e+00 2055 2010 9 2.93576e+01 1.02127e+00 2692 2010 10 2.59863e+01 1.10923e+00 4326 2010 11 2.17523e+01 1.54574e+00 3075 2010 12 1.64811e+01 3.18362e+00 1975 2011 1 1.38712e+01 1.03689e+00 1394 2011 2 1.65080e+01 1.23967e+00 1628 2011 3 2.01364e+01 1.40089e+00 3112 2011 4 2.46456e+01 1.37279e+00 3683 2011 5 2.68828e+01 1.14499e+00 4133 2011 6 2.87817e+01 1.52577e+00 2682 2011 7 3.00375e+01 1.44560e+00 1958 2011 8 3.01908e+01 1.08145e+00 2179 2011 9 2.88365e+01 1.00603e+00 2210 2011 10 2.55048e+01 1.96462e+00 2436 2011 11 2.11684e+01 7.09174e-01 2548 2011 12 1.93743e+01 7.42853e-01 2684 2012 1 1.76768e+01 1.28966e+00 2024 2012 2 1.88803e+01 1.58558e+00 1353 2012 3 2.26058e+01 1.31178e+00 3354 2012 4 2.43313e+01 9.02532e-01 2895 2012 5 2.68447e+01 1.14507e+00 3003 2012 6 2.80118e+01 1.10027e+00 2107 2012 7 2.89074e+01 1.48221e+00 2599 2012 8 3.00146e+01 1.69569e+00 2018 2012 9 2.85421e+01 1.01469e+00 1945 2012 10 2.65615e+01 1.50787e+00 2438 2012 11 2.03113e+01 8.91210e-01 2774 2012 12 1.98454e+01 1.16521e+00 2185 2013 1 1.90064e+01 1.20955e+00 1322 2013 2 1.83788e+01 1.25214e+00 2490 2013 3 1.80594e+01 9.74058e-01 2287 2013 4 2.24946e+01 2.31721e+00 2064 2013 5 2.53925e+01 1.16693e+00 3027 2013 6 2.87287e+01 1.71500e+00 2440 2013 7 2.93997e+01 1.40760e+00 1534 2013 8 3.03468e+01 1.05042e+00 2463 2013 9 2.97211e+01 1.22989e+00 2830 2013 10 2.70768e+01 1.41274e+00 3007 2013 11 2.25904e+01 1.53995e+00 1792 2013 12 2.01405e+01 1.08276e+00 1890 2014 1 1.67172e+01 1.61753e+00 1327 2014 2 1.77039e+01 1.09777e+00 1258 2014 3 1.96469e+01 1.05398e+00 2057 2014 4 2.23236e+01 1.83363e+00 2175 2014 5 2.54583e+01 1.15829e+00 2661 2014 6 2.90925e+01 1.21170e+00 2516 2014 7 3.01926e+01 1.60523e+00 2322 2014 8 3.08866e+01 9.23002e-01 2756 2014 9 2.98803e+01 1.10201e+00 1756 2014 10 2.67659e+01 1.36580e+00 3241 2014 11 2.12841e+01 1.87533e+00 2356 2014 12 1.85518e+01 9.20651e-01 1430 2015 1 1.79823e+01 1.30506e+00 1851 2015 2 1.64712e+01 1.01141e+00 2005 2015 3 2.17435e+01 1.55691e+00 2799 2015 4 2.45686e+01 1.87848e+00 2311 2015 5 2.71163e+01 1.41195e+00 3770 2015 6 2.98923e+01 1.03586e+00 2367 2015 7 3.06320e+01 1.19770e+00 1960 2015 8 2.99871e+01 1.56219e+00 2153 2015 9 2.96444e+01 1.34152e+00 1564 2015 10 2.65561e+01 1.23666e+00 2178 2015 11 2.47227e+01 1.95513e+00 3083 2015 12 2.17580e+01 1.18687e+00 1740 2016 1 1.96374e+01 2.35171e+00 911 2016 2 1.63028e+01 1.32912e+00 1471 2016 3 1.96015e+01 1.86491e+00 1174 2016 4 2.33136e+01 1.58781e+00 3113 2016 5 2.60753e+01 1.22700e+00 3220 2016 6 2.88355e+01 1.26942e+00 2448 2016 7 3.10949e+01 7.70357e-01 2130 2016 8 3.05392e+01 1.17441e+00 2123 2016 9 2.95244e+01 1.14777e+00 2747 2016 10 2.65769e+01 1.72112e+00 2800 2016 11 2.26373e+01 1.56042e+00 2618 2016 12 2.07905e+01 8.68579e-01 3046 2017 1 1.89448e+01 1.07578e+00 2050 2017 2 1.94794e+01 1.23378e+00 2216 2017 3 2.06658e+01 1.19705e+00 3203 2017 4 2.33654e+01 1.24812e+00 2899 2017 5 2.62616e+01 1.21811e+00 2718 2017 6 2.91274e+01 1.71981e+00 1497 2017 7 3.04939e+01 1.47226e+00 2174 2017 8 3.10373e+01 1.01933e+00 2189 2017 9 2.94033e+01 9.79965e-01 2539 2017 10 2.66523e+01 1.81948e+00 2611 2017 11 2.21797e+01 8.11513e-01 2963 2017 12 2.07074e+01 1.33113e+00 3033 2018 1 1.49551e+01 1.03680e+00 1499 2018 2 2.05345e+01 2.91447e+00 2387 2018 3 2.03701e+01 1.55310e+00 3278 2018 4 2.34700e+01 1.02186e+00 2843 2018 5 2.46715e+01 1.39544e+00 1543 2018 6 2.89705e+01 1.63532e+00 2468 2018 7 3.01712e+01 1.22838e+00 2287 2018 8 3.07943e+01 1.02215e+00 2395 2018 9 3.02343e+01 1.15070e+00 2709 2018 10 2.77382e+01 1.68651e+00 3375 2018 11 2.41682e+01 1.83752e+00 1938 2018 12 1.87207e+01 1.58376e+00 1605 2019 1 1.81697e+01 1.69116e+00 1784 2019 2 1.93660e+01 2.26537e+00 1881 2019 3 2.12592e+01 8.29635e-01 2835 2019 4 2.37770e+01 1.60225e+00 2571 2019 5 2.74226e+01 1.32310e+00 3401 2019 6 2.98233e+01 1.42201e+00 2461 2019 7 3.01714e+01 1.23538e+00 2168 2019 8 3.01370e+01 9.86550e-01 1937 2019 9 2.91545e+01 1.08406e+00 3214 2019 10 2.74458e+01 8.09010e-01 2853 2019 11 2.33274e+01 2.36586e+00 2148 2019 12 2.01542e+01 9.84903e-01 1502 2020 1 1.88236e+01 1.41774e+00 3016 2020 2 1.87612e+01 1.29140e+00 1887 2020 3 2.23535e+01 2.74669e+00 2599 2020 4 2.52368e+01 8.85385e-01 1790 2020 5 2.59103e+01 9.95281e-01 3043 2020 6 2.97456e+01 1.06092e+00 2114 2020 7 3.03039e+01 1.08197e+00 2220 2020 8 3.14569e+01 1.12518e+00 1146 2020 9 2.99631e+01 1.50742e+00 1351 2020 10 2.72781e+01 8.66420e-01 1959 2020 11 2.35176e+01 1.41755e+00 2256 2020 12 1.82098e+01 1.57960e+00 2551 2021 1 1.73458e+01 9.96242e-01 1817 2021 2 1.89861e+01 1.78010e+00 2460 2021 3 2.07808e+01 1.08067e+00 2611 2021 4 2.37048e+01 1.48974e+00 2859 2021 5 2.66866e+01 8.79415e-01 3550 2021 6 2.83810e+01 1.54322e+00 1530 2021 7 2.99518e+01 1.34678e+00 1656 2021 8 3.05015e+01 1.19268e+00 1723 2021 9 2.95887e+01 7.82125e-01 2264 2021 10 2.80818e+01 1.22348e+00 2925 2021 11 2.12332e+01 1.60181e+00 2887 2021 12 2.05077e+01 1.01821e+00 3465 2022 1 1.92634e+01 1.89279e+00 2412 2022 2 1.79174e+01 1.86826e+00 2356 2022 3 2.13131e+01 9.20670e-01 3600 2022 4 2.42833e+01 7.87389e-01 2147 2022 5 2.71340e+01 1.20963e+00 2763 2022 6 2.94789e+01 1.31255e+00 2239 2022 7 3.12668e+01 9.57015e-01 2511 2022 8 3.08575e+01 1.03598e+00 1689 2022 9 2.99081e+01 1.51184e+00 2236 2022 10 2.48405e+01 1.18900e+00 2875 2022 11 2.40448e+01 1.51485e+00 1909 2022 12 2.08088e+01 2.73318e+00 2394 2023 1 1.79152e+01 1.07050e+00 2437 2023 2 2.01647e+01 1.50069e+00 2969 2023 3 2.30087e+01 1.26514e+00 3753 2023 4 2.52655e+01 7.56987e-01 2313 2023 5 2.70289e+01 1.47276e+00 3917 2023 6 2.85198e+01 1.23147e+00 2990 2023 7 3.11706e+01 1.00078e+00 2395 2023 8 3.17392e+01 1.22021e+00 2572 2023 9 3.02920e+01 1.19101e+00 2695 2023 10 2.55987e+01 1.86865e+00 2503 2023 11 2.29526e+01 1.23838e+00 2046 2023 12 1.82089e+01 1.38232e+00 831 2024 1 1.69706e+01 8.33915e-01 1162 2024 2 1.74332e+01 8.34216e-01 2116 2024 3 2.25556e+01 1.16134e+00 1649 2024 4 2.26393e+01 6.79299e-01 305