YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.88169e+01 2.55938e-01 132 2000 3 2.06180e+01 1.02552e+00 692 2000 4 2.28586e+01 6.17499e-01 714 2000 5 2.52854e+01 1.12018e+00 581 2000 6 2.78047e+01 1.37258e+00 450 2000 7 2.90000e+01 7.74952e-01 500 2000 8 3.00200e+01 7.57503e-01 527 2000 9 2.87667e+01 7.29341e-01 555 2000 10 2.57729e+01 1.08377e+00 856 2000 11 2.38758e+01 1.10910e+00 617 2000 12 2.04612e+01 1.76110e+00 700 2001 1 1.57155e+01 9.24986e-01 362 2001 2 1.83442e+01 1.54656e+00 315 2001 3 1.99541e+01 7.55859e-01 566 2001 4 2.17306e+01 1.48900e+00 690 2001 5 2.38644e+01 1.60795e+00 726 2001 6 2.81220e+01 9.17488e-01 266 2001 7 2.85182e+01 1.19958e+00 395 2001 8 2.96679e+01 8.69381e-01 551 2001 9 2.87745e+01 1.14237e+00 576 2001 10 2.49615e+01 2.00718e+00 504 2001 11 2.24748e+01 7.19400e-01 869 2001 12 2.29207e+01 7.87555e-01 585 2002 1 1.91956e+01 1.25674e+00 535 2002 2 1.85180e+01 1.01632e+00 434 2002 3 1.88410e+01 1.25409e+00 349 2002 4 2.24933e+01 1.78583e+00 537 2002 5 2.60144e+01 9.08404e-01 813 2002 6 2.70137e+01 1.70701e+00 755 2002 7 2.86758e+01 1.18609e+00 1727 2002 8 2.97857e+01 9.28627e-01 1639 2002 9 2.93541e+01 1.04419e+00 2036 2002 10 2.84006e+01 8.33558e-01 3541 2002 11 2.43316e+01 2.23968e+00 2178 2002 12 1.92638e+01 1.19566e+00 1405 2003 1 1.59951e+01 1.25897e+00 2142 2003 2 1.54096e+01 9.42006e-01 1031 2003 3 2.13080e+01 1.71669e+00 1096 2003 4 2.20948e+01 1.45412e+00 2701 2003 5 2.66469e+01 1.69747e+00 3089 2003 6 2.81803e+01 1.20334e+00 1505 2003 7 2.95305e+01 1.65473e+00 1402 2003 8 2.92477e+01 1.34317e+00 2113 2003 9 2.87315e+01 1.26926e+00 2098 2003 10 2.63397e+01 1.24992e+00 2689 2003 11 2.39626e+01 9.51830e-01 2995 2003 12 1.93298e+01 1.77107e+00 1415 2004 1 1.68586e+01 1.34665e+00 2369 2004 2 1.70152e+01 1.05262e+00 771 2004 3 1.94874e+01 1.13002e+00 2558 2004 4 2.08326e+01 1.16676e+00 2996 2004 5 2.51984e+01 1.53892e+00 3816 2004 6 2.91374e+01 1.25971e+00 3269 2004 7 2.98378e+01 1.30031e+00 1962 2004 8 3.00537e+01 8.53047e-01 2013 2004 9 2.84704e+01 1.69628e+00 2215 2004 10 2.65860e+01 1.24871e+00 3237 2004 11 2.43120e+01 1.31688e+00 2818 2004 12 1.99075e+01 2.44834e+00 2015 2005 1 1.70341e+01 1.26421e+00 1968 2005 2 1.66822e+01 1.08320e+00 1739 2005 3 1.84586e+01 1.40663e+00 1447 2005 4 2.13015e+01 7.20328e-01 3083 2005 5 2.44152e+01 1.53948e+00 2828 2005 6 2.76912e+01 1.01093e+00 1934 2005 7 2.91883e+01 1.29026e+00 2676 2005 8 3.07143e+01 1.55594e+00 2031 2005 9 2.84671e+01 1.05410e+00 2837 2005 10 2.67616e+01 1.29668e+00 2738 2005 11 2.29855e+01 1.10108e+00 2345 2005 12 1.95415e+01 1.92454e+00 1908 2006 1 1.78198e+01 7.46244e-01 1996 2006 2 1.73668e+01 8.95783e-01 1846 2006 3 1.93404e+01 1.16076e+00 2864 2006 4 2.27878e+01 1.58316e+00 3511 2006 5 2.50779e+01 1.11656e+00 3312 2006 6 2.74798e+01 1.30234e+00 2676 2006 7 2.91417e+01 1.56963e+00 2441 2006 8 3.02697e+01 1.20025e+00 2560 2006 9 2.99678e+01 7.60610e-01 2575 2006 10 2.77131e+01 1.55251e+00 3355 2006 11 2.25890e+01 1.70200e+00 2064 2006 12 1.91032e+01 9.14112e-01 1099 2007 1 1.93379e+01 9.28449e-01 1606 2007 2 1.71658e+01 6.56685e-01 1553 2007 3 1.95730e+01 1.13513e+00 2342 2007 4 2.13948e+01 1.58838e+00 2721 2007 5 2.36484e+01 1.18927e+00 3779 2007 6 2.68001e+01 1.57887e+00 2800 2007 7 3.00185e+01 1.38130e+00 2543 2007 8 3.03204e+01 9.07449e-01 2936 2007 9 2.97822e+01 9.18296e-01 2407 2007 10 2.78426e+01 1.10033e+00 2241 2007 11 2.36652e+01 1.40483e+00 3464 2007 12 2.21534e+01 7.08542e-01 2632 2008 1 1.87622e+01 9.73298e-01 1724 2008 2 1.89980e+01 8.24808e-01 1949 2008 3 1.96310e+01 7.61023e-01 2179 2008 4 2.27991e+01 7.54934e-01 3034 2008 5 2.51692e+01 1.55572e+00 3418 2008 6 2.85953e+01 1.20086e+00 2721 2008 7 2.93673e+01 1.20230e+00 1549 2008 8 2.98276e+01 1.01784e+00 1808 2008 9 2.86509e+01 1.10196e+00 2321 2008 10 2.64351e+01 1.25681e+00 3123 2008 11 2.12540e+01 1.32838e+00 3067 2008 12 1.89374e+01 9.17850e-01 2278 2009 1 1.79680e+01 1.68382e+00 2465 2009 2 1.61629e+01 9.31014e-01 2151 2009 3 1.87547e+01 1.67641e+00 2285 2009 4 2.22036e+01 9.13337e-01 2824 2009 5 2.57769e+01 1.60219e+00 2741 2009 6 2.83740e+01 1.23601e+00 2778 2009 7 2.96485e+01 1.27127e+00 2202 2009 8 2.98662e+01 9.91287e-01 2740 2009 9 2.95377e+01 1.02377e+00 2389 2009 10 2.82026e+01 1.95315e+00 3180 2009 11 2.38154e+01 1.72370e+00 1395 2009 12 1.93123e+01 1.31672e+00 1030 2010 1 1.56101e+01 1.61596e+00 1177 2010 2 1.45939e+01 1.03014e+00 1061 2010 3 1.52686e+01 1.60497e+00 2175 2010 4 2.05060e+01 1.96956e+00 2137 2010 5 2.59003e+01 2.06715e+00 3318 2010 6 2.94478e+01 1.09565e+00 3368 2010 7 2.88915e+01 1.28413e+00 2381 2010 8 2.97470e+01 1.36687e+00 2057 2010 9 2.94931e+01 8.19015e-01 2723 2010 10 2.66528e+01 1.19873e+00 4289 2010 11 2.31275e+01 1.04127e+00 3337 2010 12 1.83097e+01 2.36103e+00 2660 2011 1 1.49102e+01 7.84037e-01 1522 2011 2 1.64118e+01 1.30934e+00 1567 2011 3 1.97603e+01 1.48311e+00 2841 2011 4 2.39780e+01 1.34750e+00 3265 2011 5 2.65797e+01 1.24001e+00 4016 2011 6 2.85575e+01 1.49606e+00 2604 2011 7 3.00173e+01 1.09990e+00 1949 2011 8 3.03957e+01 9.56485e-01 2645 2011 9 2.93382e+01 8.02157e-01 2140 2011 10 2.63167e+01 1.79625e+00 2455 2011 11 2.20979e+01 9.28835e-01 2825 2011 12 1.98232e+01 8.24042e-01 2502 2012 1 1.82810e+01 1.11994e+00 2090 2012 2 1.90300e+01 1.52791e+00 925 2012 3 2.20344e+01 1.26425e+00 3365 2012 4 2.39994e+01 8.35513e-01 3113 2012 5 2.63526e+01 9.52261e-01 3164 2012 6 2.79082e+01 7.98663e-01 2124 2012 7 2.85139e+01 1.44336e+00 2344 2012 8 3.01427e+01 9.81769e-01 1758 2012 9 2.84685e+01 9.37587e-01 2138 2012 10 2.70509e+01 1.28647e+00 2619 2012 11 2.18750e+01 1.24379e+00 2785 2012 12 1.99902e+01 1.32039e+00 2559 2013 1 1.89044e+01 8.03113e-01 1540 2013 2 1.86424e+01 8.34518e-01 1999 2013 3 1.83042e+01 1.04107e+00 2254 2013 4 2.20677e+01 2.02954e+00 1889 2013 5 2.43930e+01 1.17409e+00 2956 2013 6 2.82715e+01 1.60206e+00 2516 2013 7 2.94320e+01 1.33051e+00 1698 2013 8 3.00146e+01 1.22029e+00 2350 2013 9 2.97609e+01 1.26651e+00 3037 2013 10 2.75797e+01 1.08240e+00 2847 2013 11 2.37035e+01 1.43512e+00 1790 2013 12 2.08447e+01 1.05342e+00 1982 2014 1 1.76949e+01 1.50208e+00 1593 2014 2 1.73443e+01 8.11108e-01 1228 2014 3 1.90529e+01 8.48511e-01 1912 2014 4 2.18347e+01 1.71629e+00 2470 2014 5 2.52106e+01 1.33588e+00 2404 2014 6 2.85297e+01 1.35168e+00 2616 2014 7 3.01613e+01 9.70826e-01 1895 2014 8 3.07042e+01 9.95377e-01 2902 2014 9 3.00512e+01 1.21038e+00 1511 2014 10 2.75804e+01 1.26789e+00 3007 2014 11 2.27228e+01 1.73841e+00 2214 2014 12 1.89590e+01 1.03681e+00 1573 2015 1 1.82368e+01 1.03081e+00 1693 2015 2 1.68982e+01 8.15468e-01 2002 2015 3 2.10854e+01 1.54814e+00 2690 2015 4 2.39495e+01 1.86065e+00 2162 2015 5 2.68363e+01 1.37527e+00 3908 2015 6 2.95251e+01 1.17137e+00 2276 2015 7 3.01915e+01 1.46520e+00 1659 2015 8 2.99804e+01 1.30301e+00 2161 2015 9 2.95079e+01 1.42390e+00 1592 2015 10 2.71381e+01 1.27846e+00 2511 2015 11 2.53155e+01 1.39664e+00 3042 2015 12 2.23566e+01 7.22178e-01 1443 2016 1 2.06096e+01 2.35550e+00 910 2016 2 1.70965e+01 1.07417e+00 1634 2016 3 1.91086e+01 1.71966e+00 1005 2016 4 2.25594e+01 1.64679e+00 2673 2016 5 2.55940e+01 1.40843e+00 3054 2016 6 2.86398e+01 1.01347e+00 2589 2016 7 3.07937e+01 8.23911e-01 2137 2016 8 3.02200e+01 1.25210e+00 2094 2016 9 2.94969e+01 1.13057e+00 2658 2016 10 2.65746e+01 1.49106e+00 2916 2016 11 2.34743e+01 1.32652e+00 2954 2016 12 2.10487e+01 8.65065e-01 2530 2017 1 1.93428e+01 7.01094e-01 2051 2017 2 1.94503e+01 7.28102e-01 2162 2017 3 2.04751e+01 9.96064e-01 3216 2017 4 2.28102e+01 9.77804e-01 2865 2017 5 2.58388e+01 1.36938e+00 2578 2017 6 2.87577e+01 1.65376e+00 1505 2017 7 3.03261e+01 1.30903e+00 2328 2017 8 3.07454e+01 1.09947e+00 2431 2017 9 2.96446e+01 9.00778e-01 2756 2017 10 2.71762e+01 1.16716e+00 2579 2017 11 2.36074e+01 1.04292e+00 3028 2017 12 2.15285e+01 1.13377e+00 2503 2018 1 1.66267e+01 1.29205e+00 1638 2018 2 1.97605e+01 2.53028e+00 2303 2018 3 2.00766e+01 1.24089e+00 2943 2018 4 2.26699e+01 1.27114e+00 2446 2018 5 2.40818e+01 1.78553e+00 1873 2018 6 2.85718e+01 1.64059e+00 2603 2018 7 2.96950e+01 1.22653e+00 2097 2018 8 3.01907e+01 1.35481e+00 2332 2018 9 2.98585e+01 1.15552e+00 2816 2018 10 2.80925e+01 1.08286e+00 3479 2018 11 2.46117e+01 1.67861e+00 2216 2018 12 2.03777e+01 1.64718e+00 1885 2019 1 1.84930e+01 1.47447e+00 1714 2019 2 1.90457e+01 1.52000e+00 1339 2019 3 2.07605e+01 7.45210e-01 2856 2019 4 2.34612e+01 1.38187e+00 2670 2019 5 2.67684e+01 1.55830e+00 3351 2019 6 2.96027e+01 1.30004e+00 1976 2019 7 2.97345e+01 1.20256e+00 1978 2019 8 3.02104e+01 9.34693e-01 1759 2019 9 2.94070e+01 8.89305e-01 3349 2019 10 2.75827e+01 9.97557e-01 2847 2019 11 2.48583e+01 1.75071e+00 2022 2019 12 2.10924e+01 9.92118e-01 1514 2020 1 1.94692e+01 1.09299e+00 2769 2020 2 1.85906e+01 1.00346e+00 1907 2020 3 2.15633e+01 2.23609e+00 2887 2020 4 2.43474e+01 7.84025e-01 1642 2020 5 2.53442e+01 9.25069e-01 2796 2020 6 2.94121e+01 1.30455e+00 2079 2020 7 2.99952e+01 1.12707e+00 2395 2020 8 3.08413e+01 1.27950e+00 1378 2020 9 3.00133e+01 1.66195e+00 1257 2020 10 2.74993e+01 7.47066e-01 2123 2020 11 2.44171e+01 1.34557e+00 2340 2020 12 1.99723e+01 1.42778e+00 2567 2021 1 1.78526e+01 7.32660e-01 1683 2021 2 1.88514e+01 1.43003e+00 2223 2021 3 2.01576e+01 1.12304e+00 2605 2021 4 2.27462e+01 1.57863e+00 2843 2021 5 2.59966e+01 9.48527e-01 3348 2021 6 2.79690e+01 1.12001e+00 1431 2021 7 2.95700e+01 1.24781e+00 2013 2021 8 3.03637e+01 9.95634e-01 2216 2021 9 2.95473e+01 9.12366e-01 2193 2021 10 2.86889e+01 1.03112e+00 2747 2021 11 2.27638e+01 1.66118e+00 2250 2021 12 2.07519e+01 6.33280e-01 3143 2022 1 1.99481e+01 1.43709e+00 2499 2022 2 1.81657e+01 1.70458e+00 2489 2022 3 2.07678e+01 8.71559e-01 3405 2022 4 2.36365e+01 9.69460e-01 1926 2022 5 2.65148e+01 1.31564e+00 2987 2022 6 2.90110e+01 1.37197e+00 2526 2022 7 3.09344e+01 9.29613e-01 2525 2022 8 3.11253e+01 1.05883e+00 1820 2022 9 3.04112e+01 1.28565e+00 1993 2022 10 2.63516e+01 1.09398e+00 2747 2022 11 2.46557e+01 1.39386e+00 1931 2022 12 2.20106e+01 1.57587e+00 2570 2023 1 1.89512e+01 8.84050e-01 2704 2023 2 1.96737e+01 1.28751e+00 2998 2023 3 2.28484e+01 7.84590e-01 3587 2023 4 2.44071e+01 9.20458e-01 2370 2023 5 2.64938e+01 1.30445e+00 3873 2023 6 2.81147e+01 1.12241e+00 2863 2023 7 3.04423e+01 9.83441e-01 2201 2023 8 3.17136e+01 1.02066e+00 2576 2023 9 3.07911e+01 1.10170e+00 2580 2023 10 2.67216e+01 1.75533e+00 2704 2023 11 2.40487e+01 1.17092e+00 2024 2023 12 1.94675e+01 1.90804e+00 962 2024 1 1.77572e+01 7.30363e-01 1102 2024 2 1.75950e+01 6.01613e-01 2331 2024 3 2.12556e+01 1.33778e+00 1831 2024 4 2.20081e+01 4.81441e-01 299