YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.95833e+01 4.55273e-01 192 2000 3 2.13264e+01 7.02257e-01 382 2000 4 2.27063e+01 4.23234e-01 536 2000 5 2.46630e+01 1.07751e+00 756 2000 6 2.76944e+01 1.02288e+00 432 2000 7 2.88969e+01 8.35652e-01 472 2000 8 2.93851e+01 8.68872e-01 320 2000 9 2.91593e+01 9.98299e-01 679 2000 10 2.69608e+01 1.12859e+00 1042 2000 11 2.46298e+01 1.00445e+00 510 2000 12 2.19924e+01 1.56650e+00 713 2001 1 1.85030e+01 5.48929e-01 536 2001 2 1.94871e+01 1.66746e+00 398 2001 3 1.98570e+01 5.70689e-01 528 2001 4 2.17710e+01 1.74058e+00 640 2001 5 2.38026e+01 1.88931e+00 845 2001 6 2.75636e+01 1.45647e+00 387 2001 7 2.80973e+01 1.52555e+00 411 2001 8 2.91172e+01 6.76892e-01 448 2001 9 2.85798e+01 9.84949e-01 655 2001 10 2.62014e+01 1.42917e+00 397 2001 11 2.35889e+01 6.39500e-01 808 2001 12 2.35025e+01 9.74281e-01 819 2002 1 2.05871e+01 8.75378e-01 602 2002 2 1.92147e+01 3.32989e-01 373 2002 3 1.90278e+01 9.84907e-01 323 2002 4 2.31435e+01 1.70679e+00 531 2002 5 2.61289e+01 5.95290e-01 904 2002 6 2.61394e+01 1.63158e+00 547 2002 7 2.81561e+01 1.50303e+00 1558 2002 8 2.92445e+01 1.04187e+00 1447 2002 9 2.91384e+01 1.17072e+00 1761 2002 10 2.86126e+01 9.17703e-01 3574 2002 11 2.59119e+01 1.52036e+00 2240 2002 12 2.15973e+01 1.03497e+00 1748 2003 1 1.79153e+01 1.24419e+00 2305 2003 2 1.67604e+01 1.09871e+00 1230 2003 3 2.12697e+01 1.63817e+00 1441 2003 4 2.14755e+01 1.51852e+00 2449 2003 5 2.64942e+01 1.73148e+00 3649 2003 6 2.79532e+01 1.16078e+00 1390 2003 7 2.92700e+01 1.37735e+00 1731 2003 8 2.93629e+01 7.97668e-01 1734 2003 9 2.91672e+01 6.92632e-01 1835 2003 10 2.68498e+01 1.17840e+00 2719 2003 11 2.42318e+01 7.24432e-01 3404 2003 12 2.02508e+01 1.69278e+00 2056 2004 1 1.85428e+01 6.00189e-01 2418 2004 2 1.77281e+01 9.52731e-01 1027 2004 3 1.97642e+01 9.80754e-01 2435 2004 4 2.10746e+01 9.40543e-01 2639 2004 5 2.50455e+01 1.43188e+00 3806 2004 6 2.89112e+01 1.25578e+00 3180 2004 7 2.92419e+01 1.46700e+00 1997 2004 8 2.97087e+01 1.32613e+00 2187 2004 9 2.82726e+01 1.53414e+00 2184 2004 10 2.70015e+01 1.09651e+00 2995 2004 11 2.50140e+01 9.22650e-01 2695 2004 12 2.14859e+01 1.81063e+00 1795 2005 1 1.87662e+01 1.20318e+00 2629 2005 2 1.79964e+01 1.06255e+00 2022 2005 3 1.92995e+01 1.07205e+00 1543 2005 4 2.10099e+01 9.13924e-01 2966 2005 5 2.40789e+01 1.50279e+00 2929 2005 6 2.69653e+01 1.01379e+00 1842 2005 7 2.90351e+01 1.25379e+00 2620 2005 8 3.08179e+01 1.89215e+00 2443 2005 9 2.84156e+01 1.06654e+00 2981 2005 10 2.71624e+01 1.05217e+00 2526 2005 11 2.40551e+01 1.08665e+00 2431 2005 12 2.13994e+01 1.70055e+00 2185 2006 1 1.93584e+01 1.15275e+00 1683 2006 2 1.84153e+01 9.03221e-01 1945 2006 3 1.96977e+01 1.12850e+00 2626 2006 4 2.30517e+01 1.69371e+00 3469 2006 5 2.53786e+01 1.11378e+00 3078 2006 6 2.75436e+01 1.59809e+00 2564 2006 7 2.87294e+01 1.66243e+00 2647 2006 8 2.97809e+01 1.01874e+00 2491 2006 9 2.98177e+01 9.29685e-01 2272 2006 10 2.78735e+01 1.40472e+00 3573 2006 11 2.38775e+01 1.43589e+00 2180 2006 12 2.11302e+01 1.03219e+00 1564 2007 1 2.08264e+01 9.71567e-01 1878 2007 2 1.92859e+01 7.80734e-01 1687 2007 3 2.00538e+01 1.19395e+00 2447 2007 4 2.14500e+01 1.33285e+00 2818 2007 5 2.40467e+01 1.08974e+00 3406 2007 6 2.67313e+01 1.49621e+00 2968 2007 7 3.00159e+01 1.35665e+00 2032 2007 8 3.00670e+01 8.66366e-01 2956 2007 9 2.96074e+01 1.19999e+00 2458 2007 10 2.83591e+01 7.52151e-01 2386 2007 11 2.48145e+01 1.05628e+00 3376 2007 12 2.30526e+01 8.69388e-01 3187 2008 1 2.04135e+01 1.11757e+00 2241 2008 2 2.04010e+01 8.29845e-01 2168 2008 3 2.02427e+01 1.23650e+00 2032 2008 4 2.25306e+01 8.29524e-01 3795 2008 5 2.50476e+01 1.67727e+00 3664 2008 6 2.83315e+01 1.10565e+00 2643 2008 7 2.89857e+01 1.61837e+00 1739 2008 8 2.93260e+01 1.09348e+00 1685 2008 9 2.86784e+01 1.17231e+00 2114 2008 10 2.69217e+01 1.17936e+00 2570 2008 11 2.33146e+01 1.10721e+00 2858 2008 12 2.13158e+01 6.89369e-01 2710 2009 1 1.97655e+01 1.44203e+00 2578 2009 2 1.72579e+01 8.41663e-01 2482 2009 3 1.94272e+01 1.72040e+00 2691 2009 4 2.20982e+01 1.32689e+00 2743 2009 5 2.55192e+01 1.47787e+00 2933 2009 6 2.79611e+01 1.24610e+00 2213 2009 7 2.92903e+01 1.52536e+00 2432 2009 8 2.96749e+01 1.10690e+00 2581 2009 9 2.98022e+01 9.13229e-01 1888 2009 10 2.85857e+01 1.81561e+00 3298 2009 11 2.44707e+01 1.68801e+00 1658 2009 12 2.11820e+01 1.24009e+00 1152 2010 1 1.72454e+01 1.36018e+00 1292 2010 2 1.57094e+01 1.20399e+00 1070 2010 3 1.58409e+01 1.19422e+00 1950 2010 4 2.03804e+01 1.72206e+00 2066 2010 5 2.60171e+01 1.93593e+00 3410 2010 6 2.92936e+01 9.81557e-01 3021 2010 7 2.91035e+01 1.04050e+00 2495 2010 8 2.98923e+01 1.41446e+00 1934 2010 9 2.94177e+01 9.07608e-01 2645 2010 10 2.68856e+01 1.14359e+00 4183 2010 11 2.40433e+01 9.99918e-01 3689 2010 12 1.98557e+01 2.10830e+00 2262 2011 1 1.65160e+01 1.02035e+00 1903 2011 2 1.72707e+01 8.76595e-01 1546 2011 3 1.99363e+01 1.47408e+00 2675 2011 4 2.38046e+01 1.38783e+00 2911 2011 5 2.65223e+01 1.38078e+00 3835 2011 6 2.84304e+01 1.52362e+00 2939 2011 7 2.95203e+01 1.47321e+00 2209 2011 8 2.97783e+01 1.32833e+00 2590 2011 9 2.91267e+01 1.05425e+00 2007 2011 10 2.76259e+01 1.54329e+00 1989 2011 11 2.35895e+01 6.35611e-01 3438 2011 12 2.07364e+01 1.03509e+00 2869 2012 1 1.94100e+01 1.00141e+00 2238 2012 2 1.98095e+01 9.09948e-01 1546 2012 3 2.20148e+01 1.00992e+00 3292 2012 4 2.38886e+01 8.43886e-01 3053 2012 5 2.62384e+01 9.27539e-01 2778 2012 6 2.77055e+01 8.49607e-01 1670 2012 7 2.88733e+01 1.20676e+00 2153 2012 8 2.95828e+01 1.20559e+00 1935 2012 9 2.82372e+01 1.20859e+00 2021 2012 10 2.72752e+01 8.83558e-01 2428 2012 11 2.27372e+01 1.17905e+00 2805 2012 12 2.12445e+01 1.26638e+00 2311 2013 1 2.04399e+01 5.55054e-01 2335 2013 2 2.00709e+01 5.21644e-01 2685 2013 3 1.89834e+01 1.09735e+00 2698 2013 4 2.13036e+01 1.74802e+00 2092 2013 5 2.46968e+01 1.23282e+00 3196 2013 6 2.81944e+01 1.61102e+00 2575 2013 7 2.87304e+01 1.29140e+00 1917 2013 8 2.98622e+01 1.19608e+00 2259 2013 9 2.97357e+01 1.07351e+00 2764 2013 10 2.78262e+01 1.21762e+00 2389 2013 11 2.40531e+01 1.37632e+00 1684 2013 12 2.22462e+01 9.26371e-01 2103 2014 1 1.90702e+01 1.22603e+00 1804 2014 2 1.93703e+01 1.02296e+00 1664 2014 3 2.05174e+01 6.35394e-01 1931 2014 4 2.20982e+01 2.06753e+00 2233 2014 5 2.46293e+01 9.94029e-01 2343 2014 6 2.81865e+01 1.14926e+00 2333 2014 7 2.97405e+01 1.36346e+00 2649 2014 8 3.05371e+01 9.96028e-01 2706 2014 9 2.96358e+01 1.52636e+00 1390 2014 10 2.82878e+01 1.09814e+00 3029 2014 11 2.40101e+01 1.73828e+00 2496 2014 12 2.09609e+01 7.57224e-01 2304 2015 1 2.00042e+01 1.31133e+00 1677 2015 2 1.82826e+01 8.42804e-01 2118 2015 3 2.16935e+01 1.45825e+00 2825 2015 4 2.45067e+01 1.71260e+00 2207 2015 5 2.69700e+01 1.24932e+00 4107 2015 6 2.86523e+01 1.65603e+00 2081 2015 7 2.98847e+01 1.37200e+00 1868 2015 8 2.99185e+01 1.28127e+00 2208 2015 9 3.00164e+01 1.39839e+00 947 2015 10 2.79426e+01 9.38266e-01 2161 2015 11 2.63004e+01 9.47911e-01 2980 2015 12 2.34940e+01 9.42174e-01 2343 2016 1 2.18048e+01 2.21672e+00 980 2016 2 1.87408e+01 1.02316e+00 2003 2016 3 1.98479e+01 1.66577e+00 1244 2016 4 2.27069e+01 1.46448e+00 2305 2016 5 2.57178e+01 1.51258e+00 3007 2016 6 2.85300e+01 1.17128e+00 2680 2016 7 3.02161e+01 1.25332e+00 2566 2016 8 3.01496e+01 1.22195e+00 2370 2016 9 2.91281e+01 1.33442e+00 2155 2016 10 2.69838e+01 1.60168e+00 2974 2016 11 2.41693e+01 1.12687e+00 2910 2016 12 2.19823e+01 7.39275e-01 2562 2017 1 2.00035e+01 7.70051e-01 2386 2017 2 1.98440e+01 7.25209e-01 2444 2017 3 2.08023e+01 8.68152e-01 3263 2017 4 2.26515e+01 1.17387e+00 2623 2017 5 2.57306e+01 1.53246e+00 2724 2017 6 2.82675e+01 1.99337e+00 1361 2017 7 3.02695e+01 1.08324e+00 2551 2017 8 3.07687e+01 1.00769e+00 2351 2017 9 2.94836e+01 8.73802e-01 2730 2017 10 2.75788e+01 1.07164e+00 2608 2017 11 2.42537e+01 1.19463e+00 3020 2017 12 2.27139e+01 1.32202e+00 2567 2018 1 1.89458e+01 1.39904e+00 1485 2018 2 2.04866e+01 2.23080e+00 2610 2018 3 2.12955e+01 1.06845e+00 3022 2018 4 2.28296e+01 1.23806e+00 2493 2018 5 2.39574e+01 1.25801e+00 1985 2018 6 2.84107e+01 1.57580e+00 2813 2018 7 2.99268e+01 1.02453e+00 1978 2018 8 3.01397e+01 7.81107e-01 2498 2018 9 2.96588e+01 1.20743e+00 2541 2018 10 2.79562e+01 1.30305e+00 3303 2018 11 2.50788e+01 1.54031e+00 1876 2018 12 2.17291e+01 1.51143e+00 2175 2019 1 2.00375e+01 1.13337e+00 1993 2019 2 1.95724e+01 1.47723e+00 1693 2019 3 2.14400e+01 6.09157e-01 2619 2019 4 2.32285e+01 1.23510e+00 2715 2019 5 2.63860e+01 1.36336e+00 3164 2019 6 2.93115e+01 1.45939e+00 2230 2019 7 3.00956e+01 1.28946e+00 2305 2019 8 2.99804e+01 7.70862e-01 1614 2019 9 2.94130e+01 8.02352e-01 2932 2019 10 2.81448e+01 7.37161e-01 2715 2019 11 2.62799e+01 1.54927e+00 2037 2019 12 2.33020e+01 9.59231e-01 1372 2020 1 2.09447e+01 1.10959e+00 2857 2020 2 2.00008e+01 6.64890e-01 2037 2020 3 2.18347e+01 1.93278e+00 3400 2020 4 2.44481e+01 7.18175e-01 1846 2020 5 2.54317e+01 1.02891e+00 2952 2020 6 2.89205e+01 1.59780e+00 2064 2020 7 2.99750e+01 1.15058e+00 2436 2020 8 3.07540e+01 1.07215e+00 1326 2020 9 2.99738e+01 1.50904e+00 1664 2020 10 2.79515e+01 8.91256e-01 2076 2020 11 2.54081e+01 1.17056e+00 2746 2020 12 2.16097e+01 1.30899e+00 2358 2021 1 1.93380e+01 8.19680e-01 2180 2021 2 1.98209e+01 8.47524e-01 2628 2021 3 2.06653e+01 9.60906e-01 2807 2021 4 2.21375e+01 1.41219e+00 3165 2021 5 2.58229e+01 1.13168e+00 3047 2021 6 2.74227e+01 1.15104e+00 1495 2021 7 2.93332e+01 1.12476e+00 2181 2021 8 3.02316e+01 7.04788e-01 1818 2021 9 2.97967e+01 5.62057e-01 2191 2021 10 2.87898e+01 9.34366e-01 2388 2021 11 2.46800e+01 1.22284e+00 2440 2021 12 2.28561e+01 4.62065e-01 3465 2022 1 2.17333e+01 1.28650e+00 2354 2022 2 1.89600e+01 1.29521e+00 2648 2022 3 2.08605e+01 9.28580e-01 3121 2022 4 2.33131e+01 1.06682e+00 1970 2022 5 2.62567e+01 1.34965e+00 2790 2022 6 2.85830e+01 1.43732e+00 2647 2022 7 3.06446e+01 9.30294e-01 2499 2022 8 3.03802e+01 9.60766e-01 1923 2022 9 3.00777e+01 1.28241e+00 1836 2022 10 2.74656e+01 1.18441e+00 2779 2022 11 2.56066e+01 1.01700e+00 1959 2022 12 2.35797e+01 1.21471e+00 2411 2023 1 2.12799e+01 8.02946e-01 2796 2023 2 2.08576e+01 1.09854e+00 3209 2023 3 2.29737e+01 8.60893e-01 3791 2023 4 2.47644e+01 6.94688e-01 2662 2023 5 2.64533e+01 1.12039e+00 3890 2023 6 2.78692e+01 1.37791e+00 2773 2023 7 3.08631e+01 1.06354e+00 2581 2023 8 3.15378e+01 1.13503e+00 2491 2023 9 3.08455e+01 1.06929e+00 2448 2023 10 2.78155e+01 1.26340e+00 2491 2023 11 2.55526e+01 8.32776e-01 2010 2023 12 2.24090e+01 1.80142e+00 904 2024 1 2.01193e+01 7.33119e-01 1113 2024 2 1.94887e+01 5.74066e-01 2462 2024 3 2.15853e+01 1.11223e+00 1758 2024 4 2.17704e+01 6.97629e-01 254