YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.90797e+01 4.62342e-01 152 2000 3 2.11806e+01 7.47095e-01 607 2000 4 2.32305e+01 5.92445e-01 673 2000 5 2.56087e+01 1.51365e+00 801 2000 6 2.76857e+01 1.05088e+00 208 2000 7 2.98734e+01 1.15806e+00 462 2000 8 2.97648e+01 4.97608e-01 230 2000 9 2.94751e+01 1.32883e+00 427 2000 10 2.62838e+01 1.31598e+00 949 2000 11 2.41189e+01 1.07501e+00 783 2000 12 2.09749e+01 1.17894e+00 872 2001 1 1.69335e+01 1.39863e+00 373 2001 2 1.88033e+01 1.75844e+00 279 2001 3 2.03663e+01 7.89364e-01 708 2001 4 2.24722e+01 1.73026e+00 478 2001 5 2.30782e+01 1.34488e+00 640 2001 6 2.89692e+01 4.28686e-01 220 2001 7 2.85010e+01 1.00399e+00 460 2001 8 3.01050e+01 6.40283e-01 384 2001 9 2.84165e+01 1.18517e+00 280 2001 10 2.60929e+01 1.89104e+00 550 2001 11 2.27824e+01 4.83774e-01 840 2001 12 2.33752e+01 5.52498e-01 722 2002 1 1.96528e+01 1.47396e+00 573 2002 2 1.89349e+01 2.82420e-01 384 2002 3 1.94992e+01 1.32756e+00 451 2002 4 2.43165e+01 1.22937e+00 896 2002 5 2.63726e+01 4.89415e-01 896 2002 6 2.67340e+01 1.31000e+00 426 2002 7 2.88980e+01 1.45365e+00 1458 2002 8 2.98562e+01 1.12704e+00 1916 2002 9 2.95628e+01 1.45065e+00 2063 2002 10 2.86695e+01 1.04418e+00 3701 2002 11 2.53212e+01 2.15856e+00 2469 2002 12 1.99945e+01 1.44661e+00 1585 2003 1 1.71687e+01 1.30585e+00 2031 2003 2 1.69425e+01 9.58078e-01 1217 2003 3 2.18524e+01 1.44293e+00 1372 2003 4 2.24060e+01 1.49976e+00 2883 2003 5 2.71036e+01 1.55350e+00 3379 2003 6 2.85279e+01 1.12571e+00 1768 2003 7 3.01080e+01 1.53741e+00 1631 2003 8 2.93981e+01 1.34302e+00 1992 2003 9 2.93517e+01 8.54964e-01 2099 2003 10 2.68777e+01 1.27730e+00 3033 2003 11 2.38605e+01 8.75555e-01 2917 2003 12 2.01000e+01 1.61591e+00 2050 2004 1 1.80628e+01 9.11436e-01 2289 2004 2 1.78189e+01 9.78365e-01 1604 2004 3 1.99970e+01 8.00518e-01 2253 2004 4 2.15713e+01 1.18484e+00 2856 2004 5 2.53219e+01 1.38710e+00 3591 2004 6 2.90951e+01 9.51670e-01 3179 2004 7 2.95799e+01 1.43864e+00 2631 2004 8 3.00152e+01 1.48896e+00 2149 2004 9 2.86954e+01 1.55125e+00 2202 2004 10 2.70361e+01 9.43117e-01 3172 2004 11 2.48374e+01 9.25452e-01 2839 2004 12 2.06991e+01 2.11471e+00 1943 2005 1 1.84578e+01 1.09613e+00 2479 2005 2 1.79041e+01 9.17717e-01 2080 2005 3 1.91938e+01 1.48272e+00 1786 2005 4 2.17678e+01 8.16890e-01 2811 2005 5 2.54140e+01 1.71206e+00 2840 2005 6 2.84078e+01 1.23935e+00 1436 2005 7 2.97043e+01 9.65144e-01 2900 2005 8 3.10625e+01 1.21985e+00 2452 2005 9 2.86377e+01 1.08040e+00 2550 2005 10 2.67059e+01 1.62999e+00 2381 2005 11 2.35290e+01 7.82106e-01 2393 2005 12 2.08147e+01 1.51518e+00 2189 2006 1 1.89599e+01 7.33291e-01 2225 2006 2 1.85541e+01 1.26919e+00 2496 2006 3 2.00619e+01 1.25547e+00 2687 2006 4 2.32989e+01 1.70057e+00 3559 2006 5 2.57457e+01 1.28517e+00 3003 2006 6 2.82983e+01 1.37562e+00 2735 2006 7 2.93380e+01 1.26187e+00 2166 2006 8 3.01909e+01 1.19736e+00 2596 2006 9 2.99780e+01 1.24405e+00 2527 2006 10 2.79165e+01 1.35139e+00 3436 2006 11 2.33863e+01 1.74785e+00 1687 2006 12 2.04212e+01 9.63735e-01 1452 2007 1 2.03889e+01 1.04464e+00 1880 2007 2 1.85504e+01 6.91635e-01 1388 2007 3 1.99694e+01 1.28464e+00 2301 2007 4 2.19796e+01 1.45769e+00 2944 2007 5 2.40290e+01 1.33502e+00 3764 2007 6 2.70814e+01 1.63668e+00 2690 2007 7 3.04311e+01 1.61665e+00 1892 2007 8 3.04923e+01 1.09702e+00 3186 2007 9 3.03422e+01 1.16040e+00 2144 2007 10 2.83601e+01 9.71048e-01 1861 2007 11 2.44313e+01 1.30612e+00 3375 2007 12 2.26296e+01 8.38674e-01 2947 2008 1 1.97283e+01 1.04501e+00 2265 2008 2 2.01639e+01 9.30774e-01 1717 2008 3 2.04688e+01 1.43902e+00 2081 2008 4 2.33094e+01 7.94308e-01 3495 2008 5 2.57983e+01 1.51968e+00 3956 2008 6 2.89306e+01 1.10200e+00 2682 2008 7 2.96676e+01 1.19024e+00 1739 2008 8 2.99857e+01 9.65451e-01 2235 2008 9 2.89554e+01 1.15226e+00 1886 2008 10 2.68834e+01 1.26458e+00 2747 2008 11 2.22311e+01 1.49824e+00 3332 2008 12 2.00462e+01 8.36225e-01 2605 2009 1 1.92232e+01 1.13321e+00 2285 2009 2 1.68452e+01 1.09568e+00 1920 2009 3 1.94057e+01 1.81413e+00 2556 2009 4 2.29095e+01 9.61687e-01 2850 2009 5 2.59764e+01 1.64144e+00 2722 2009 6 2.82285e+01 1.56583e+00 2807 2009 7 2.99300e+01 1.12399e+00 2673 2009 8 3.03436e+01 1.08456e+00 2513 2009 9 2.99074e+01 1.29360e+00 2218 2009 10 2.88021e+01 1.80297e+00 3596 2009 11 2.42036e+01 1.91975e+00 1791 2009 12 2.12463e+01 1.28904e+00 1188 2010 1 1.65053e+01 1.68214e+00 1334 2010 2 1.55291e+01 8.51194e-01 927 2010 3 1.59526e+01 1.03840e+00 1979 2010 4 2.07189e+01 1.75804e+00 2021 2010 5 2.63904e+01 1.89539e+00 3492 2010 6 2.98374e+01 1.10142e+00 3217 2010 7 2.89228e+01 1.04094e+00 2249 2010 8 3.04202e+01 1.02376e+00 1945 2010 9 2.96795e+01 1.24828e+00 2885 2010 10 2.67955e+01 1.23820e+00 3752 2010 11 2.34312e+01 1.27848e+00 3426 2010 12 1.89239e+01 2.12699e+00 2557 2011 1 1.56031e+01 1.02407e+00 1465 2011 2 1.72919e+01 1.05654e+00 1481 2011 3 1.98430e+01 1.39946e+00 2865 2011 4 2.46650e+01 1.33929e+00 3425 2011 5 2.70937e+01 1.10380e+00 3758 2011 6 2.88300e+01 1.10695e+00 3084 2011 7 3.00110e+01 1.49882e+00 1855 2011 8 3.06351e+01 8.90556e-01 2300 2011 9 2.94906e+01 9.65301e-01 2569 2011 10 2.72400e+01 1.73134e+00 2124 2011 11 2.26826e+01 6.27752e-01 3014 2011 12 2.08183e+01 7.16927e-01 3142 2012 1 1.94036e+01 8.84452e-01 2524 2012 2 1.96697e+01 1.37035e+00 1500 2012 3 2.26102e+01 1.07494e+00 3561 2012 4 2.45635e+01 7.53596e-01 2878 2012 5 2.64848e+01 1.10680e+00 2993 2012 6 2.80434e+01 1.06122e+00 1869 2012 7 2.93139e+01 1.25320e+00 2659 2012 8 2.98775e+01 1.74580e+00 1889 2012 9 2.84337e+01 1.21339e+00 2135 2012 10 2.69904e+01 1.34790e+00 2474 2012 11 2.24279e+01 1.32924e+00 2456 2012 12 2.07829e+01 1.22865e+00 2407 2013 1 2.01846e+01 9.37576e-01 1719 2013 2 1.95930e+01 7.30371e-01 2549 2013 3 1.92633e+01 7.73798e-01 2464 2013 4 2.26843e+01 2.18282e+00 2046 2013 5 2.53049e+01 9.95181e-01 2936 2013 6 2.83304e+01 1.61851e+00 2586 2013 7 2.94721e+01 9.80126e-01 1681 2013 8 2.98390e+01 1.31489e+00 2377 2013 9 2.97917e+01 1.11133e+00 2502 2013 10 2.78127e+01 1.17830e+00 2776 2013 11 2.40459e+01 1.42450e+00 2035 2013 12 2.19428e+01 1.12969e+00 2064 2014 1 1.89085e+01 1.36943e+00 1958 2014 2 1.93882e+01 1.08365e+00 1528 2014 3 2.07580e+01 8.40427e-01 2321 2014 4 2.29015e+01 1.76844e+00 2199 2014 5 2.59593e+01 1.07998e+00 2407 2014 6 2.89013e+01 1.21324e+00 2583 2014 7 2.99418e+01 1.37856e+00 2202 2014 8 3.09541e+01 9.82737e-01 2799 2014 9 3.03623e+01 1.21987e+00 1647 2014 10 2.81923e+01 1.16802e+00 3040 2014 11 2.34371e+01 1.59293e+00 2297 2014 12 2.04229e+01 5.73659e-01 2349 2015 1 1.94479e+01 1.47275e+00 1606 2015 2 1.81354e+01 5.64588e-01 2198 2015 3 2.19307e+01 1.52009e+00 2714 2015 4 2.44992e+01 2.03178e+00 2583 2015 5 2.75433e+01 1.33786e+00 3282 2015 6 2.95475e+01 1.17717e+00 2203 2015 7 3.03037e+01 6.12209e-01 1783 2015 8 3.02541e+01 1.10510e+00 2155 2015 9 3.02980e+01 1.10882e+00 984 2015 10 2.76939e+01 1.26873e+00 2440 2015 11 2.59786e+01 1.16824e+00 2988 2015 12 2.29524e+01 8.10763e-01 1844 2016 1 2.10136e+01 2.01410e+00 946 2016 2 1.80332e+01 1.14362e+00 1804 2016 3 1.98571e+01 1.54491e+00 1438 2016 4 2.32014e+01 1.03336e+00 2780 2016 5 2.60179e+01 1.69005e+00 3112 2016 6 2.87711e+01 1.56933e+00 2741 2016 7 3.03289e+01 1.02642e+00 2624 2016 8 3.00967e+01 1.38223e+00 2371 2016 9 2.98511e+01 1.25400e+00 2616 2016 10 2.69300e+01 1.69868e+00 3125 2016 11 2.37922e+01 1.24629e+00 3180 2016 12 2.20592e+01 6.87276e-01 2954 2017 1 2.01695e+01 7.66726e-01 2632 2017 2 2.00575e+01 1.00625e+00 2702 2017 3 2.11546e+01 1.05181e+00 3283 2017 4 2.33795e+01 9.19082e-01 2552 2017 5 2.64279e+01 1.29124e+00 2845 2017 6 2.88551e+01 1.72857e+00 1524 2017 7 3.05143e+01 1.07189e+00 2217 2017 8 3.08133e+01 1.24344e+00 2343 2017 9 2.97212e+01 1.10210e+00 2615 2017 10 2.78717e+01 1.27231e+00 2505 2017 11 2.39127e+01 7.26660e-01 3536 2017 12 2.22506e+01 1.22576e+00 3275 2018 1 1.72358e+01 1.84440e+00 1557 2018 2 2.02592e+01 2.45625e+00 2850 2018 3 2.10105e+01 1.09905e+00 3256 2018 4 2.34341e+01 1.18767e+00 2677 2018 5 2.43371e+01 1.22261e+00 1652 2018 6 2.87480e+01 1.62781e+00 2490 2018 7 3.03547e+01 1.36942e+00 2386 2018 8 3.05297e+01 9.91898e-01 2532 2018 9 2.99818e+01 1.40643e+00 2337 2018 10 2.80462e+01 1.28472e+00 3010 2018 11 2.55329e+01 1.12109e+00 1947 2018 12 2.08418e+01 1.98704e+00 2187 2019 1 1.93162e+01 1.09009e+00 1834 2019 2 1.98463e+01 1.53708e+00 1965 2019 3 2.16830e+01 8.88265e-01 2730 2019 4 2.38668e+01 1.30724e+00 2537 2019 5 2.72422e+01 1.19166e+00 3204 2019 6 2.96912e+01 1.39333e+00 2659 2019 7 3.05574e+01 1.11892e+00 2608 2019 8 3.00758e+01 9.29732e-01 1521 2019 9 2.96608e+01 1.05661e+00 3508 2019 10 2.82152e+01 5.34252e-01 2896 2019 11 2.56303e+01 2.05243e+00 2204 2019 12 2.24042e+01 1.04347e+00 1930 2020 1 2.04061e+01 1.00966e+00 3101 2020 2 2.00457e+01 1.03830e+00 2342 2020 3 2.25265e+01 2.17252e+00 3451 2020 4 2.50416e+01 1.28893e+00 2293 2020 5 2.60618e+01 1.02393e+00 3165 2020 6 2.95517e+01 1.30398e+00 2096 2020 7 3.04012e+01 1.10682e+00 2103 2020 8 3.08965e+01 1.18036e+00 1456 2020 9 3.03045e+01 1.20037e+00 2038 2020 10 2.78711e+01 9.16826e-01 1860 2020 11 2.50474e+01 1.19309e+00 2678 2020 12 2.10115e+01 1.40242e+00 2869 2021 1 1.85286e+01 8.16119e-01 2191 2021 2 1.99768e+01 1.25636e+00 2373 2021 3 2.12352e+01 1.14355e+00 3093 2021 4 2.32435e+01 1.48756e+00 3212 2021 5 2.66479e+01 8.72218e-01 3532 2021 6 2.79129e+01 1.12251e+00 1333 2021 7 2.99254e+01 1.12075e+00 2216 2021 8 3.05819e+01 9.32395e-01 2343 2021 9 3.02457e+01 7.52809e-01 2395 2021 10 2.91252e+01 9.72853e-01 2559 2021 11 2.40077e+01 1.43520e+00 2698 2021 12 2.20683e+01 6.11501e-01 3638 2022 1 2.11292e+01 1.28921e+00 2640 2022 2 1.89661e+01 1.63853e+00 2552 2022 3 2.16033e+01 9.98373e-01 3618 2022 4 2.38161e+01 9.08769e-01 2067 2022 5 2.68693e+01 1.31937e+00 3306 2022 6 2.93320e+01 1.44951e+00 2566 2022 7 3.09545e+01 1.46465e+00 2912 2022 8 3.11314e+01 1.02585e+00 2167 2022 9 3.06619e+01 1.31492e+00 1905 2022 10 2.69081e+01 9.17006e-01 2989 2022 11 2.55037e+01 1.15670e+00 2077 2022 12 2.26636e+01 1.48250e+00 2644 2023 1 1.99853e+01 9.89996e-01 3000 2023 2 2.10657e+01 1.27263e+00 3107 2023 3 2.37119e+01 8.40094e-01 4142 2023 4 2.53552e+01 7.99301e-01 2707 2023 5 2.73287e+01 1.31657e+00 3802 2023 6 2.88490e+01 1.30458e+00 2514 2023 7 3.14717e+01 1.02099e+00 2113 2023 8 3.17515e+01 1.04648e+00 2634 2023 9 3.08390e+01 1.09216e+00 2924 2023 10 2.77113e+01 1.45223e+00 2588 2023 11 2.44803e+01 1.33239e+00 2333 2023 12 2.09304e+01 1.67108e+00 1105 2024 1 1.90292e+01 8.52273e-01 1116 2024 2 1.88582e+01 9.56256e-01 2115 2024 3 2.20965e+01 1.11043e+00 2060 2024 4 2.23184e+01 2.05094e-01 128