YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.94237e+01 2.99700e-01 128 2000 3 2.10142e+01 1.27820e+00 666 2000 4 2.31944e+01 7.50822e-01 789 2000 5 2.51334e+01 1.36861e+00 704 2000 6 2.77016e+01 1.01482e+00 473 2000 7 2.92616e+01 1.21709e+00 564 2000 8 2.94544e+01 1.30442e+00 256 2000 9 2.94545e+01 9.28371e-01 611 2000 10 2.60876e+01 1.30661e+00 1024 2000 11 2.40983e+01 1.01423e+00 652 2000 12 2.06326e+01 1.23885e+00 844 2001 1 1.68345e+01 9.60682e-01 563 2001 2 1.81654e+01 1.84202e+00 335 2001 3 2.04409e+01 5.25920e-01 640 2001 4 2.16644e+01 1.60164e+00 684 2001 5 2.36118e+01 2.18722e+00 764 2001 6 2.82707e+01 8.94443e-01 384 2001 7 2.87953e+01 7.33136e-01 462 2001 8 2.94937e+01 4.86021e-01 341 2001 9 2.81105e+01 1.23918e+00 466 2001 10 2.62151e+01 1.27136e+00 416 2001 11 2.25375e+01 6.22022e-01 770 2001 12 2.32024e+01 6.75928e-01 674 2002 1 1.94914e+01 1.44264e+00 648 2002 2 1.83982e+01 5.58250e-01 360 2002 3 1.85116e+01 1.31787e+00 305 2002 4 2.39814e+01 1.52279e+00 700 2002 5 2.61096e+01 5.55975e-01 760 2002 6 2.70911e+01 1.25839e+00 448 2002 7 2.87230e+01 1.64039e+00 1593 2002 8 2.95579e+01 9.40010e-01 1988 2002 9 2.94535e+01 1.20771e+00 1980 2002 10 2.82935e+01 1.42527e+00 3504 2002 11 2.46220e+01 2.35578e+00 2534 2002 12 1.96155e+01 1.24224e+00 1416 2003 1 1.63380e+01 1.17093e+00 2142 2003 2 1.64400e+01 7.50610e-01 1040 2003 3 2.19555e+01 1.76022e+00 1401 2003 4 2.23790e+01 1.12245e+00 2880 2003 5 2.71397e+01 1.69631e+00 3512 2003 6 2.84385e+01 1.29629e+00 1544 2003 7 2.95956e+01 1.61191e+00 1822 2003 8 2.96469e+01 1.15106e+00 2041 2003 9 2.89717e+01 9.98173e-01 2171 2003 10 2.65066e+01 1.30496e+00 2948 2003 11 2.38432e+01 8.10767e-01 3429 2003 12 1.96167e+01 1.67863e+00 1898 2004 1 1.76400e+01 1.08767e+00 2470 2004 2 1.72681e+01 1.08755e+00 1374 2004 3 1.98523e+01 1.01803e+00 2534 2004 4 2.11633e+01 1.31896e+00 2722 2004 5 2.52586e+01 1.36519e+00 3655 2004 6 2.90478e+01 1.09494e+00 3230 2004 7 2.95578e+01 1.36946e+00 2223 2004 8 2.99065e+01 1.46526e+00 1942 2004 9 2.88189e+01 1.67495e+00 1926 2004 10 2.69370e+01 1.11887e+00 3487 2004 11 2.46019e+01 1.18308e+00 2822 2004 12 2.08151e+01 2.16180e+00 1909 2005 1 1.74872e+01 9.76445e-01 2128 2005 2 1.70073e+01 1.35613e+00 2109 2005 3 1.91831e+01 1.35413e+00 1500 2005 4 2.17809e+01 7.10233e-01 2814 2005 5 2.46835e+01 1.35953e+00 2789 2005 6 2.80736e+01 1.09684e+00 1980 2005 7 2.97357e+01 9.69344e-01 2714 2005 8 3.09600e+01 1.45777e+00 2501 2005 9 2.83041e+01 1.52292e+00 2623 2005 10 2.68743e+01 1.35296e+00 2432 2005 11 2.31090e+01 9.82309e-01 2534 2005 12 2.05043e+01 1.71952e+00 1997 2006 1 1.83709e+01 9.15417e-01 1996 2006 2 1.79341e+01 9.94712e-01 2152 2006 3 1.97556e+01 1.21462e+00 2472 2006 4 2.32056e+01 1.90597e+00 3234 2006 5 2.56291e+01 1.08451e+00 3045 2006 6 2.79579e+01 1.31284e+00 2380 2006 7 2.92188e+01 1.38867e+00 2298 2006 8 3.03245e+01 1.05421e+00 2421 2006 9 2.99046e+01 8.30902e-01 2668 2006 10 2.75916e+01 1.42259e+00 3618 2006 11 2.29787e+01 1.70466e+00 1908 2006 12 2.00095e+01 1.17625e+00 1352 2007 1 1.97917e+01 1.55667e+00 1765 2007 2 1.79522e+01 9.39041e-01 1418 2007 3 1.95357e+01 1.18733e+00 2613 2007 4 2.18192e+01 1.25394e+00 2779 2007 5 2.39478e+01 8.57983e-01 3617 2007 6 2.67946e+01 1.43505e+00 3065 2007 7 3.02493e+01 1.32196e+00 2266 2007 8 3.04172e+01 1.26649e+00 2886 2007 9 2.98355e+01 1.51404e+00 2681 2007 10 2.79758e+01 1.20660e+00 2428 2007 11 2.40025e+01 1.20605e+00 3500 2007 12 2.24436e+01 7.75766e-01 3129 2008 1 1.95214e+01 1.27686e+00 2027 2008 2 1.99885e+01 1.19484e+00 1915 2008 3 2.02098e+01 1.11217e+00 2027 2008 4 2.30096e+01 8.67814e-01 3848 2008 5 2.55326e+01 1.53511e+00 3514 2008 6 2.87147e+01 1.33232e+00 2725 2008 7 2.93101e+01 1.45930e+00 1921 2008 8 2.95201e+01 1.26863e+00 1667 2008 9 2.87415e+01 1.09851e+00 2157 2008 10 2.66169e+01 1.38527e+00 3052 2008 11 2.14515e+01 1.36979e+00 2785 2008 12 1.99390e+01 9.05827e-01 2698 2009 1 1.89912e+01 1.41162e+00 2735 2009 2 1.64392e+01 8.23911e-01 2159 2009 3 1.90128e+01 1.86601e+00 2337 2009 4 2.26188e+01 1.12402e+00 3044 2009 5 2.58482e+01 1.60959e+00 2801 2009 6 2.82470e+01 1.10543e+00 2442 2009 7 2.95122e+01 1.25436e+00 2673 2009 8 3.00627e+01 9.03808e-01 2608 2009 9 2.97302e+01 1.22133e+00 1947 2009 10 2.84309e+01 2.04992e+00 3445 2009 11 2.42505e+01 1.65867e+00 1873 2009 12 2.03065e+01 1.82408e+00 1489 2010 1 1.54971e+01 1.64453e+00 1299 2010 2 1.51816e+01 1.06948e+00 1095 2010 3 1.55609e+01 1.24980e+00 1908 2010 4 2.03764e+01 1.84172e+00 2093 2010 5 2.62761e+01 1.84803e+00 3545 2010 6 2.94559e+01 9.54073e-01 2806 2010 7 2.90135e+01 9.00696e-01 2246 2010 8 3.02863e+01 1.11084e+00 1804 2010 9 2.95370e+01 9.62589e-01 2946 2010 10 2.65198e+01 1.28824e+00 3825 2010 11 2.32299e+01 1.15998e+00 3281 2010 12 1.83578e+01 2.38733e+00 2684 2011 1 1.50355e+01 1.31243e+00 1865 2011 2 1.71271e+01 1.34565e+00 1689 2011 3 1.99873e+01 1.46672e+00 2837 2011 4 2.45059e+01 1.41659e+00 3599 2011 5 2.68852e+01 1.05011e+00 4030 2011 6 2.85446e+01 1.30964e+00 3040 2011 7 3.00185e+01 8.63969e-01 2244 2011 8 3.02955e+01 1.13724e+00 2628 2011 9 2.93266e+01 9.72214e-01 2473 2011 10 2.70472e+01 1.75927e+00 1958 2011 11 2.23990e+01 7.48571e-01 3100 2011 12 2.03389e+01 8.23148e-01 2759 2012 1 1.87996e+01 9.03839e-01 2343 2012 2 1.92610e+01 1.56069e+00 1578 2012 3 2.23494e+01 1.03116e+00 3219 2012 4 2.41474e+01 8.55953e-01 2929 2012 5 2.64433e+01 8.97260e-01 2885 2012 6 2.81769e+01 8.03217e-01 1931 2012 7 2.90047e+01 1.45004e+00 2666 2012 8 2.99636e+01 1.11649e+00 1788 2012 9 2.83487e+01 1.09920e+00 2266 2012 10 2.70605e+01 1.37852e+00 2869 2012 11 2.20152e+01 1.27338e+00 2700 2012 12 2.03839e+01 1.26100e+00 2142 2013 1 1.97293e+01 8.28028e-01 2002 2013 2 1.92218e+01 8.41298e-01 2333 2013 3 1.88130e+01 1.23425e+00 2494 2013 4 2.24564e+01 2.01942e+00 2191 2013 5 2.53251e+01 1.01033e+00 3496 2013 6 2.82196e+01 1.61216e+00 2321 2013 7 2.93667e+01 1.13366e+00 1916 2013 8 3.01817e+01 9.90686e-01 1886 2013 9 2.98194e+01 1.09196e+00 3033 2013 10 2.75252e+01 1.25726e+00 2954 2013 11 2.38286e+01 1.34798e+00 1554 2013 12 2.14563e+01 1.01611e+00 1735 2014 1 1.83567e+01 1.43352e+00 1455 2014 2 1.88204e+01 1.27276e+00 1844 2014 3 2.02590e+01 6.50206e-01 1942 2014 4 2.25809e+01 1.78774e+00 2095 2014 5 2.56944e+01 8.21965e-01 2398 2014 6 2.85958e+01 1.41346e+00 2456 2014 7 3.01733e+01 1.15460e+00 2121 2014 8 3.08315e+01 1.02070e+00 2840 2014 9 3.00948e+01 1.10558e+00 1549 2014 10 2.80070e+01 1.27962e+00 3441 2014 11 2.28920e+01 1.79578e+00 2172 2014 12 1.98553e+01 8.99296e-01 2291 2015 1 1.93247e+01 1.08403e+00 1732 2015 2 1.73897e+01 9.96546e-01 2178 2015 3 2.16976e+01 1.47779e+00 2618 2015 4 2.42125e+01 1.97005e+00 2088 2015 5 2.69798e+01 1.42655e+00 3944 2015 6 2.92845e+01 1.38831e+00 2215 2015 7 2.99933e+01 1.29492e+00 2019 2015 8 3.01429e+01 1.13529e+00 2099 2015 9 2.96100e+01 1.52546e+00 1112 2015 10 2.74213e+01 1.26716e+00 2322 2015 11 2.55660e+01 1.26736e+00 2935 2015 12 2.26904e+01 1.02816e+00 2001 2016 1 2.14561e+01 1.88671e+00 907 2016 2 1.75821e+01 1.33543e+00 1999 2016 3 1.94412e+01 1.69438e+00 1399 2016 4 2.30326e+01 1.16165e+00 2427 2016 5 2.58304e+01 1.53835e+00 3229 2016 6 2.85370e+01 1.22835e+00 2755 2016 7 3.05550e+01 1.17039e+00 2530 2016 8 3.01489e+01 1.24702e+00 2202 2016 9 2.96346e+01 1.25611e+00 2770 2016 10 2.68042e+01 1.62447e+00 2875 2016 11 2.36457e+01 1.49635e+00 3031 2016 12 2.15777e+01 1.04420e+00 3226 2017 1 1.97817e+01 1.00580e+00 2283 2017 2 1.97346e+01 8.78258e-01 2496 2017 3 2.07397e+01 9.39371e-01 3355 2017 4 2.30424e+01 9.34892e-01 3086 2017 5 2.60124e+01 1.31001e+00 2939 2017 6 2.87005e+01 1.38035e+00 1413 2017 7 3.06094e+01 9.97998e-01 2180 2017 8 3.08555e+01 1.18747e+00 2598 2017 9 2.95873e+01 1.09844e+00 2870 2017 10 2.75822e+01 1.31752e+00 2716 2017 11 2.36594e+01 8.71676e-01 3387 2017 12 2.21121e+01 1.22988e+00 2994 2018 1 1.72533e+01 1.37494e+00 1348 2018 2 2.02657e+01 2.16735e+00 2654 2018 3 2.07922e+01 1.32777e+00 3165 2018 4 2.31411e+01 1.26640e+00 2591 2018 5 2.42736e+01 1.29923e+00 1686 2018 6 2.86670e+01 1.42990e+00 2760 2018 7 2.99185e+01 1.09421e+00 1686 2018 8 3.03630e+01 7.01865e-01 2608 2018 9 2.98457e+01 1.41172e+00 3135 2018 10 2.80273e+01 1.32916e+00 3398 2018 11 2.49621e+01 1.57343e+00 1955 2018 12 2.04682e+01 1.77160e+00 1838 2019 1 1.89368e+01 1.16604e+00 2212 2019 2 1.91848e+01 1.78020e+00 1709 2019 3 2.12593e+01 9.51173e-01 2748 2019 4 2.36355e+01 1.45766e+00 3017 2019 5 2.69246e+01 1.36589e+00 3206 2019 6 2.96938e+01 1.09237e+00 2278 2019 7 3.04333e+01 9.99632e-01 2281 2019 8 2.99506e+01 9.08232e-01 1576 2019 9 2.94491e+01 9.91067e-01 2895 2019 10 2.79992e+01 7.87993e-01 3092 2019 11 2.53420e+01 2.00619e+00 2013 2019 12 2.20927e+01 9.25984e-01 1732 2020 1 1.99504e+01 1.01383e+00 2912 2020 2 1.94462e+01 1.13237e+00 1902 2020 3 2.20430e+01 2.16721e+00 3192 2020 4 2.49670e+01 9.40478e-01 1979 2020 5 2.58263e+01 9.93247e-01 2972 2020 6 2.95494e+01 1.14469e+00 2371 2020 7 3.02791e+01 9.90729e-01 2220 2020 8 3.09174e+01 1.04019e+00 1699 2020 9 2.98648e+01 1.49068e+00 1961 2020 10 2.77885e+01 9.08651e-01 2108 2020 11 2.45818e+01 1.23630e+00 2958 2020 12 2.02097e+01 1.43584e+00 2518 2021 1 1.82000e+01 8.77560e-01 2149 2021 2 1.94963e+01 1.46664e+00 2543 2021 3 2.08437e+01 1.13726e+00 2684 2021 4 2.30285e+01 1.63448e+00 3301 2021 5 2.64908e+01 9.30527e-01 3237 2021 6 2.74832e+01 1.17358e+00 1276 2021 7 2.95952e+01 1.07899e+00 2320 2021 8 3.06382e+01 9.10925e-01 1821 2021 9 2.99692e+01 6.51545e-01 2598 2021 10 2.87421e+01 1.11543e+00 2921 2021 11 2.33643e+01 1.51592e+00 2684 2021 12 2.14231e+01 7.44614e-01 3310 2022 1 2.04884e+01 1.45034e+00 2699 2022 2 1.86360e+01 1.30642e+00 2490 2022 3 2.13131e+01 9.86662e-01 3762 2022 4 2.35695e+01 9.22256e-01 2160 2022 5 2.65281e+01 1.29493e+00 2864 2022 6 2.89912e+01 1.34126e+00 2635 2022 7 3.08644e+01 1.24759e+00 2758 2022 8 3.09549e+01 9.25928e-01 2058 2022 9 3.05250e+01 1.14331e+00 1654 2022 10 2.66642e+01 1.21479e+00 2623 2022 11 2.48415e+01 1.47183e+00 2174 2022 12 2.25612e+01 1.55958e+00 2579 2023 1 1.99140e+01 1.45448e+00 2821 2023 2 2.08581e+01 1.12668e+00 3131 2023 3 2.33589e+01 8.82869e-01 4001 2023 4 2.52343e+01 7.62645e-01 2513 2023 5 2.68827e+01 1.19740e+00 3747 2023 6 2.84876e+01 1.40133e+00 2858 2023 7 3.11084e+01 8.59655e-01 2477 2023 8 3.19255e+01 1.25256e+00 2553 2023 9 3.06752e+01 1.12339e+00 2872 2023 10 2.75640e+01 1.52953e+00 2790 2023 11 2.42666e+01 1.27714e+00 2086 2023 12 2.03149e+01 1.64814e+00 1023 2024 1 1.82366e+01 6.43559e-01 1143 2024 2 1.82497e+01 6.57110e-01 2458 2024 3 2.21559e+01 1.05059e+00 1874 2024 4 2.25743e+01 3.29233e-01 202