YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.89637e+01 2.91248e-01 179 2000 3 2.08371e+01 1.29487e+00 789 2000 4 2.16877e+01 1.47562e+00 662 2000 5 2.61398e+01 1.70834e+00 604 2000 6 2.79104e+01 1.33714e+00 530 2000 7 2.85527e+01 1.21199e+00 430 2000 8 2.96163e+01 5.55494e-01 299 2000 9 2.77226e+01 8.25003e-01 257 2000 10 2.32674e+01 1.68825e+00 756 2000 11 2.20557e+01 1.68490e+00 305 2000 12 1.58544e+01 2.51841e-01 24 2001 1 1.18632e+01 6.70009e-02 33 2001 2 1.82661e+01 2.28033e+00 445 2001 3 1.63962e+01 1.42313e+00 320 2001 4 2.19479e+01 2.11307e+00 731 2001 5 2.56850e+01 9.36606e-01 676 2001 6 2.80995e+01 8.70101e-01 175 2001 7 2.91834e+01 5.63846e-01 190 2001 8 2.92117e+01 2.10937e+00 448 2001 9 2.67038e+01 1.43026e+00 256 2001 10 2.25642e+01 2.04065e+00 401 2001 11 1.97533e+01 1.19573e+00 697 2001 12 1.84125e+01 2.70509e+00 603 2002 1 1.73822e+01 2.21419e+00 256 2002 2 1.60439e+01 2.88738e+00 391 2002 3 1.98084e+01 1.76841e+00 255 2002 4 2.46166e+01 2.10956e+00 629 2002 5 2.58331e+01 1.90321e+00 836 2002 6 2.82789e+01 9.91691e-01 498 2002 7 2.92581e+01 1.49209e+00 1365 2002 8 2.87018e+01 1.38216e+00 1650 2002 9 2.82913e+01 1.52490e+00 1684 2002 10 2.66211e+01 2.27978e+00 2714 2002 11 1.96792e+01 2.51012e+00 1718 2002 12 1.43355e+01 1.01808e+00 487 2003 1 1.16391e+01 1.49818e+00 1397 2003 2 1.51734e+01 1.94695e+00 1093 2003 3 2.11212e+01 1.60583e+00 1465 2003 4 2.18914e+01 2.46213e+00 2453 2003 5 2.73142e+01 1.34054e+00 2661 2003 6 2.83060e+01 1.33471e+00 1701 2003 7 2.92916e+01 1.60420e+00 1315 2003 8 2.86459e+01 1.26284e+00 2012 2003 9 2.73108e+01 1.17890e+00 1868 2003 10 2.40549e+01 1.22464e+00 2648 2003 11 2.13535e+01 2.20125e+00 2786 2003 12 1.39642e+01 1.41589e+00 404 2004 1 1.38148e+01 1.38833e+00 1529 2004 2 1.38774e+01 1.62835e+00 614 2004 3 1.90370e+01 2.08916e+00 2851 2004 4 2.04798e+01 1.99773e+00 2678 2004 5 2.64294e+01 1.79071e+00 3614 2004 6 2.99718e+01 1.14977e+00 1720 2004 7 3.00954e+01 1.38648e+00 2084 2004 8 2.95518e+01 1.50037e+00 2107 2004 9 2.67835e+01 2.12843e+00 1733 2004 10 2.46262e+01 1.93658e+00 2409 2004 11 2.11399e+01 2.78690e+00 2205 2004 12 1.70709e+01 1.46852e+00 889 2005 1 1.47710e+01 2.51998e+00 1083 2005 2 1.50207e+01 1.51886e+00 1351 2005 3 1.71042e+01 2.26454e+00 1768 2005 4 2.04139e+01 1.02464e+00 2878 2005 5 2.53158e+01 2.01774e+00 2894 2005 6 2.82837e+01 1.51917e+00 1735 2005 7 3.06153e+01 1.57195e+00 2285 2005 8 3.06854e+01 1.83672e+00 1859 2005 9 2.77902e+01 1.47665e+00 2730 2005 10 2.57237e+01 2.11500e+00 2074 2005 11 2.05537e+01 2.05083e+00 1810 2005 12 1.46341e+01 1.93198e+00 1475 2006 1 1.49320e+01 2.04688e+00 1456 2006 2 1.44642e+01 1.84036e+00 1630 2006 3 1.89031e+01 1.82038e+00 3192 2006 4 2.32044e+01 2.46064e+00 3141 2006 5 2.53996e+01 2.24494e+00 3160 2006 6 2.83682e+01 1.32814e+00 2756 2006 7 3.00157e+01 1.34295e+00 2733 2006 8 3.03275e+01 1.18780e+00 2262 2006 9 2.83298e+01 1.68938e+00 2643 2006 10 2.35913e+01 2.38687e+00 2602 2006 11 1.89488e+01 2.07132e+00 1151 2006 12 1.63543e+01 1.68974e+00 895 2007 1 1.49602e+01 2.43629e+00 1111 2007 2 1.40375e+01 1.82582e+00 1528 2007 3 1.93664e+01 2.20712e+00 2962 2007 4 2.14529e+01 2.15265e+00 2288 2007 5 2.43985e+01 1.40613e+00 2965 2007 6 2.81392e+01 1.63900e+00 2172 2007 7 3.03909e+01 1.54878e+00 1855 2007 8 3.06684e+01 1.07917e+00 2233 2007 9 2.80777e+01 1.41012e+00 1937 2007 10 2.58576e+01 1.14234e+00 1548 2007 11 1.87487e+01 1.89630e+00 2671 2007 12 1.78919e+01 2.16175e+00 1607 2008 1 1.44184e+01 2.87801e+00 590 2008 2 1.68392e+01 2.11726e+00 1843 2008 3 1.78879e+01 2.39299e+00 2446 2008 4 2.22834e+01 1.84140e+00 2670 2008 5 2.53097e+01 1.55513e+00 2805 2008 6 2.92576e+01 1.14968e+00 2559 2008 7 2.99246e+01 1.57002e+00 1645 2008 8 2.88603e+01 1.68595e+00 1531 2008 9 2.72669e+01 2.10776e+00 2343 2008 10 2.30166e+01 2.80279e+00 2725 2008 11 1.67542e+01 3.00314e+00 2062 2008 12 1.62078e+01 1.99237e+00 1625 2009 1 1.50960e+01 2.61047e+00 1694 2009 2 1.43882e+01 2.44898e+00 1811 2009 3 1.83560e+01 3.20177e+00 2615 2009 4 2.20769e+01 2.07371e+00 2347 2009 5 2.63962e+01 1.68790e+00 2435 2009 6 2.90479e+01 1.83242e+00 2369 2009 7 2.91275e+01 1.36822e+00 1923 2009 8 2.95719e+01 1.69263e+00 2533 2009 9 2.85688e+01 1.27855e+00 2188 2009 10 2.61981e+01 2.73838e+00 2517 2009 11 1.91621e+01 1.82509e+00 1747 2009 12 1.37711e+01 2.77061e+00 483 2010 1 1.25076e+01 3.34298e+00 1156 2010 2 1.16382e+01 1.75071e+00 1773 2010 3 1.56306e+01 2.30044e+00 2155 2010 4 2.18685e+01 1.66537e+00 2409 2010 5 2.69913e+01 1.84540e+00 3231 2010 6 3.03817e+01 1.36495e+00 2731 2010 7 2.99797e+01 1.53983e+00 2777 2010 8 3.03291e+01 1.99076e+00 1248 2010 9 2.90630e+01 1.77030e+00 2371 2010 10 2.42955e+01 1.47842e+00 4060 2010 11 1.95488e+01 1.68109e+00 2495 2010 12 1.36483e+01 2.61294e+00 959 2011 1 1.14963e+01 1.76514e+00 1308 2011 2 1.59218e+01 2.82264e+00 1248 2011 3 1.99485e+01 2.04485e+00 2608 2011 4 2.40736e+01 1.84946e+00 3786 2011 5 2.63359e+01 2.02542e+00 4231 2011 6 2.94890e+01 1.38926e+00 2425 2011 7 2.97349e+01 1.29586e+00 2020 2011 8 3.03757e+01 1.22576e+00 2542 2011 9 2.83440e+01 9.56008e-01 2846 2011 10 2.27750e+01 2.34840e+00 2541 2011 11 1.87053e+01 1.62549e+00 1899 2011 12 1.60252e+01 1.34400e+00 1615 2012 1 1.54668e+01 2.24213e+00 1793 2012 2 1.71595e+01 2.55935e+00 598 2012 3 2.20207e+01 2.19821e+00 2798 2012 4 2.32919e+01 1.77317e+00 3373 2012 5 2.71923e+01 9.25288e-01 3026 2012 6 2.77751e+01 1.49870e+00 1714 2012 7 2.96688e+01 1.95428e+00 2299 2012 8 2.94971e+01 1.48363e+00 1899 2012 9 2.80994e+01 1.58594e+00 2236 2012 10 2.40124e+01 2.57061e+00 2278 2012 11 1.78343e+01 1.32982e+00 2050 2012 12 1.69189e+01 2.26847e+00 1814 2013 1 1.63759e+01 1.99172e+00 1326 2013 2 1.53609e+01 2.01336e+00 1533 2013 3 1.58926e+01 1.92521e+00 2873 2013 4 2.16727e+01 2.21080e+00 2218 2013 5 2.51973e+01 2.41077e+00 2774 2013 6 2.85711e+01 1.67243e+00 2177 2013 7 2.86714e+01 1.60577e+00 1410 2013 8 3.00723e+01 1.82348e+00 2231 2013 9 2.90504e+01 1.98483e+00 2321 2013 10 2.44015e+01 2.60012e+00 2529 2013 11 2.02677e+01 2.29762e+00 1123 2013 12 1.72569e+01 2.02425e+00 1271 2014 1 1.25667e+01 1.26878e+00 809 2014 2 1.53303e+01 2.28599e+00 1364 2014 3 1.76810e+01 1.67081e+00 2064 2014 4 2.19180e+01 2.35296e+00 2150 2014 5 2.53482e+01 1.87597e+00 2528 2014 6 2.87334e+01 1.64419e+00 2035 2014 7 3.02375e+01 1.57260e+00 2032 2014 8 2.96310e+01 1.42975e+00 2391 2014 9 2.78669e+01 1.72461e+00 1233 2014 10 2.47378e+01 2.14852e+00 3208 2014 11 1.67602e+01 2.26334e+00 1535 2014 12 1.64836e+01 1.64946e+00 1810 2015 1 1.42161e+01 1.80822e+00 1671 2015 2 1.36092e+01 1.85299e+00 1772 2015 3 1.97841e+01 2.49216e+00 1905 2015 4 2.39510e+01 1.85139e+00 1444 2015 5 2.67719e+01 2.26792e+00 3759 2015 6 3.00197e+01 1.35786e+00 2227 2015 7 2.95206e+01 1.40711e+00 1344 2015 8 3.01830e+01 1.51553e+00 2085 2015 9 2.72236e+01 1.82343e+00 1259 2015 10 2.38779e+01 1.69808e+00 1893 2015 11 2.22182e+01 3.63235e+00 2325 2015 12 1.86798e+01 2.19781e+00 999 2016 1 1.36054e+01 1.53418e+00 1277 2016 2 1.47616e+01 1.86143e+00 1854 2016 3 1.86594e+01 1.93994e+00 1258 2016 4 2.25495e+01 2.06370e+00 2216 2016 5 2.61373e+01 1.83940e+00 2904 2016 6 2.98396e+01 1.52498e+00 2794 2016 7 3.14107e+01 1.35831e+00 2975 2016 8 3.00505e+01 1.29450e+00 1862 2016 9 2.91740e+01 1.24658e+00 2484 2016 10 2.46907e+01 1.70768e+00 2712 2016 11 1.96774e+01 2.60953e+00 2450 2016 12 1.80069e+01 1.80424e+00 1672 2017 1 1.55193e+01 2.25821e+00 1397 2017 2 1.83644e+01 1.82217e+00 2405 2017 3 1.92670e+01 2.72299e+00 2812 2017 4 2.35217e+01 1.79383e+00 2878 2017 5 2.52799e+01 1.90314e+00 2636 2017 6 2.86952e+01 2.17634e+00 1335 2017 7 2.99748e+01 1.46325e+00 1608 2017 8 3.00624e+01 1.42129e+00 2144 2017 9 2.81042e+01 1.54725e+00 2232 2017 10 2.44626e+01 3.25134e+00 2669 2017 11 1.96894e+01 1.35292e+00 2815 2017 12 1.75135e+01 3.23122e+00 1194 2018 1 1.16391e+01 1.72682e+00 1133 2018 2 2.06504e+01 3.24894e+00 1840 2018 3 1.81330e+01 2.46695e+00 2890 2018 4 2.18012e+01 1.45448e+00 2685 2018 5 2.52750e+01 2.05977e+00 1856 2018 6 2.94686e+01 1.72208e+00 2032 2018 7 2.91370e+01 1.76836e+00 1564 2018 8 3.05485e+01 1.28841e+00 1569 2018 9 3.01362e+01 1.31226e+00 2863 2018 10 2.65592e+01 2.50072e+00 2909 2018 11 1.86522e+01 3.03506e+00 1240 2018 12 1.57394e+01 1.88746e+00 1361 2019 1 1.50881e+01 2.27344e+00 1419 2019 2 1.91481e+01 2.97787e+00 1217 2019 3 1.89848e+01 1.79156e+00 2467 2019 4 2.25347e+01 1.99846e+00 2359 2019 5 2.79515e+01 1.94050e+00 3257 2019 6 2.91961e+01 1.48842e+00 1990 2019 7 2.93821e+01 1.74199e+00 1818 2019 8 3.02952e+01 1.23757e+00 2045 2019 9 2.88697e+01 1.43607e+00 3238 2019 10 2.57616e+01 1.79122e+00 2092 2019 11 1.87107e+01 2.35246e+00 2042 2019 12 1.67383e+01 1.92510e+00 1758 2020 1 1.56333e+01 2.25685e+00 2170 2020 2 1.54505e+01 1.66314e+00 1879 2020 3 2.22292e+01 3.76290e+00 2764 2020 4 2.37573e+01 1.07319e+00 1761 2020 5 2.50030e+01 1.88085e+00 2960 2020 6 2.94496e+01 1.51336e+00 2188 2020 7 3.02041e+01 1.37752e+00 1711 2020 8 3.13404e+01 1.15518e+00 1480 2020 9 2.86712e+01 2.19476e+00 1259 2020 10 2.56447e+01 1.31808e+00 2233 2020 11 2.07095e+01 2.22098e+00 2566 2020 12 1.43557e+01 1.65229e+00 2338 2021 1 1.48791e+01 2.22588e+00 1594 2021 2 1.72012e+01 2.70557e+00 1958 2021 3 1.96154e+01 2.40932e+00 2524 2021 4 2.21523e+01 2.56192e+00 2503 2021 5 2.54667e+01 1.82950e+00 2773 2021 6 2.81826e+01 1.50357e+00 1428 2021 7 2.97559e+01 1.12682e+00 1206 2021 8 2.98809e+01 1.61642e+00 1740 2021 9 2.82969e+01 1.40523e+00 2038 2021 10 2.61530e+01 1.91306e+00 2064 2021 11 1.78965e+01 1.66221e+00 2441 2021 12 1.80026e+01 1.82966e+00 2580 2022 1 1.49286e+01 2.87847e+00 2654 2022 2 1.66116e+01 3.39524e+00 2517 2022 3 1.98831e+01 1.65540e+00 2848 2022 4 2.31580e+01 1.80753e+00 1838 2022 5 2.69416e+01 1.59012e+00 2953 2022 6 2.95084e+01 1.23169e+00 2553 2022 7 3.07131e+01 1.21538e+00 1992 2022 8 3.07971e+01 1.33134e+00 1893 2022 9 2.83470e+01 2.15862e+00 1665 2022 10 2.29128e+01 2.18697e+00 2957 2022 11 2.17714e+01 2.37414e+00 1699 2022 12 1.79271e+01 3.35411e+00 2507 2023 1 1.51998e+01 1.88110e+00 2451 2023 2 1.75587e+01 2.08976e+00 1982 2023 3 2.08950e+01 2.44852e+00 2878 2023 4 2.38295e+01 1.28415e+00 1783 2023 5 2.55138e+01 2.08914e+00 2477 2023 6 2.80671e+01 1.69665e+00 2206 2023 7 3.10883e+01 1.31007e+00 2527 2023 8 3.09446e+01 1.16654e+00 2719 2023 9 2.89903e+01 1.38122e+00 2313 2023 10 2.32656e+01 1.73069e+00 2489 2023 11 1.99324e+01 2.01123e+00 1651 2023 12 1.43030e+01 1.45174e+00 1369 2024 1 1.37277e+01 1.54980e+00 1265 2024 2 1.60701e+01 1.25093e+00 1929 2024 3 2.06187e+01 1.62668e+00 1854 2024 4 2.22521e+01 5.25747e-01 253