YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.58150e+01 3.63080e-01 197 2000 3 2.58515e+01 3.86598e-01 321 2000 4 2.59959e+01 3.90101e-01 462 2000 5 2.73904e+01 6.88043e-01 518 2000 6 2.61341e+01 7.89391e-01 453 2000 7 2.77073e+01 5.48417e-01 434 2000 8 2.81535e+01 6.91019e-01 301 2000 9 2.90198e+01 4.12874e-01 659 2000 10 2.92125e+01 5.03114e-01 764 2000 11 2.81056e+01 9.04621e-01 1009 2000 12 2.66837e+01 6.69088e-01 481 2001 1 2.62381e+01 4.94085e-01 427 2001 2 2.56274e+01 5.34136e-01 592 2001 3 2.57717e+01 5.82009e-01 571 2001 4 2.68012e+01 1.18729e+00 679 2001 5 2.69834e+01 4.79504e-01 634 2001 6 2.77480e+01 4.96754e-01 203 2001 7 2.77427e+01 4.62661e-01 327 2001 8 2.80133e+01 5.84420e-01 476 2001 9 2.88885e+01 4.03879e-01 658 2001 10 2.83102e+01 6.17818e-01 416 2001 11 2.85154e+01 8.20140e-01 423 2001 12 2.73203e+01 5.67129e-01 512 2002 1 2.67678e+01 3.33448e-01 683 2002 2 2.60426e+01 5.42557e-01 740 2002 3 2.62821e+01 5.44837e-01 768 2002 4 2.66671e+01 5.00928e-01 415 2002 5 2.70499e+01 5.47090e-01 742 2002 6 2.69805e+01 6.99739e-01 181 2002 7 2.76075e+01 5.77856e-01 2078 2002 8 2.86556e+01 6.00007e-01 1672 2002 9 2.88828e+01 7.07822e-01 1475 2002 10 2.88311e+01 5.76217e-01 2537 2002 11 2.83508e+01 5.09271e-01 3340 2002 12 2.72614e+01 4.74800e-01 2457 2003 1 2.66551e+01 5.46569e-01 3018 2003 2 2.63572e+01 5.10642e-01 2517 2003 3 2.66541e+01 8.49997e-01 2684 2003 4 2.71554e+01 7.95622e-01 1499 2003 5 2.74628e+01 1.00089e+00 1922 2003 6 2.69178e+01 9.53763e-01 684 2003 7 2.72061e+01 7.88508e-01 1177 2003 8 2.83621e+01 7.56039e-01 2203 2003 9 2.91092e+01 7.40399e-01 2064 2003 10 2.90452e+01 6.37426e-01 2360 2003 11 2.82885e+01 6.08623e-01 1771 2003 12 2.72051e+01 6.90141e-01 2028 2004 1 2.65868e+01 4.23229e-01 3196 2004 2 2.63350e+01 5.00135e-01 2665 2004 3 2.62393e+01 5.18937e-01 3047 2004 4 2.74709e+01 6.18136e-01 2852 2004 5 2.72383e+01 6.34220e-01 1517 2004 6 2.76575e+01 6.12693e-01 1544 2004 7 2.79952e+01 8.24870e-01 1926 2004 8 2.83781e+01 8.80695e-01 1969 2004 9 2.90653e+01 8.50983e-01 1165 2004 10 2.91061e+01 6.68432e-01 2145 2004 11 2.77706e+01 7.79344e-01 2196 2004 12 2.68887e+01 4.90196e-01 3294 2005 1 2.60811e+01 4.22153e-01 2850 2005 2 2.57956e+01 4.96983e-01 2941 2005 3 2.65775e+01 7.94518e-01 3648 2005 4 2.76487e+01 1.00518e+00 2454 2005 5 2.84079e+01 9.00988e-01 1788 2005 6 2.84723e+01 9.39040e-01 1622 2005 7 2.85343e+01 8.05577e-01 1488 2005 8 2.91496e+01 9.91405e-01 1177 2005 9 2.97617e+01 7.55049e-01 2077 2005 10 2.91577e+01 7.40591e-01 1028 2005 11 2.82647e+01 5.22859e-01 2437 2005 12 2.72041e+01 5.67336e-01 2825 2006 1 2.63126e+01 5.45423e-01 2381 2006 2 2.62148e+01 3.95982e-01 2867 2006 3 2.63445e+01 5.61188e-01 3198 2006 4 2.75412e+01 8.21279e-01 2555 2006 5 2.81151e+01 7.18193e-01 1869 2006 6 2.84328e+01 7.58417e-01 1379 2006 7 2.81298e+01 6.14874e-01 1473 2006 8 2.81499e+01 6.12997e-01 1668 2006 9 2.93337e+01 7.86781e-01 2560 2006 10 2.92730e+01 5.99513e-01 1685 2006 11 2.84217e+01 6.77882e-01 2889 2006 12 2.73523e+01 6.79102e-01 3135 2007 1 2.66786e+01 3.49764e-01 3322 2007 2 2.65184e+01 7.34663e-01 2695 2007 3 2.67741e+01 5.70382e-01 2280 2007 4 2.72712e+01 7.36229e-01 2747 2007 5 2.83241e+01 8.74572e-01 2095 2007 6 2.81539e+01 7.42556e-01 1861 2007 7 2.80316e+01 7.85680e-01 1326 2007 8 2.85137e+01 7.95158e-01 1544 2007 9 2.88065e+01 7.23761e-01 2032 2007 10 2.90795e+01 6.34162e-01 1983 2007 11 2.79199e+01 7.45431e-01 2148 2007 12 2.69002e+01 5.03768e-01 2898 2008 1 2.63578e+01 3.89537e-01 3292 2008 2 2.58916e+01 3.65906e-01 2669 2008 3 2.58037e+01 6.46009e-01 2737 2008 4 2.60194e+01 8.07246e-01 2368 2008 5 2.72832e+01 8.98766e-01 2556 2008 6 2.80090e+01 5.69390e-01 1433 2008 7 2.79404e+01 7.05924e-01 2465 2008 8 2.86681e+01 6.26641e-01 1869 2008 9 2.90763e+01 5.42443e-01 1257 2008 10 2.87396e+01 4.85996e-01 2343 2008 11 2.82537e+01 8.18980e-01 2197 2008 12 2.64283e+01 4.56712e-01 3043 2009 1 2.59642e+01 5.52897e-01 3070 2009 2 2.59791e+01 4.92889e-01 2463 2009 3 2.57891e+01 5.07920e-01 2290 2009 4 2.64434e+01 6.30595e-01 2695 2009 5 2.68885e+01 1.03966e+00 1448 2009 6 2.76684e+01 9.84977e-01 1504 2009 7 2.80846e+01 1.00723e+00 1614 2009 8 2.82467e+01 7.66853e-01 2473 2009 9 2.90101e+01 7.47883e-01 1379 2009 10 2.90247e+01 5.46282e-01 2446 2009 11 2.86410e+01 5.55284e-01 2984 2009 12 2.75872e+01 6.32398e-01 2689 2010 1 2.70222e+01 6.91700e-01 2235 2010 2 2.69350e+01 6.73462e-01 2860 2010 3 2.75502e+01 6.67489e-01 2844 2010 4 2.74307e+01 6.29709e-01 2200 2010 5 2.84270e+01 8.85679e-01 1583 2010 6 2.87268e+01 6.93633e-01 1615 2010 7 2.84083e+01 7.95385e-01 1573 2010 8 2.95225e+01 7.77228e-01 2022 2010 9 2.92805e+01 8.70773e-01 1295 2010 10 2.89618e+01 6.03351e-01 2249 2010 11 2.75291e+01 8.94100e-01 1776 2010 12 2.69211e+01 8.97439e-01 1863 2011 1 2.61941e+01 4.52780e-01 2391 2011 2 2.60575e+01 4.30499e-01 3057 2011 3 2.60669e+01 4.95249e-01 3018 2011 4 2.68537e+01 6.27010e-01 2570 2011 5 2.76430e+01 9.72556e-01 1262 2011 6 2.85207e+01 7.64599e-01 1308 2011 7 2.84150e+01 6.61200e-01 1409 2011 8 2.84201e+01 6.42440e-01 1754 2011 9 2.91513e+01 7.83049e-01 1942 2011 10 2.90193e+01 6.10504e-01 2106 2011 11 2.83016e+01 5.23293e-01 2446 2011 12 2.75647e+01 8.05879e-01 2813 2012 1 2.63354e+01 4.64718e-01 3212 2012 2 2.61924e+01 4.73098e-01 3157 2012 3 2.60833e+01 4.79129e-01 2778 2012 4 2.69486e+01 8.80912e-01 2006 2012 5 2.70649e+01 1.03289e+00 1652 2012 6 2.78002e+01 8.12105e-01 1913 2012 7 2.79922e+01 7.42594e-01 1969 2012 8 2.82664e+01 5.50680e-01 1458 2012 9 2.91046e+01 7.06208e-01 2546 2012 10 2.92332e+01 6.79424e-01 1456 2012 11 2.88024e+01 5.64089e-01 2798 2012 12 2.74108e+01 7.42412e-01 2458 2013 1 2.63241e+01 4.68059e-01 3075 2013 2 2.59975e+01 5.09218e-01 2927 2013 3 2.66008e+01 8.64666e-01 2739 2013 4 2.70781e+01 7.13013e-01 3042 2013 5 2.78939e+01 8.46753e-01 1967 2013 6 2.70963e+01 1.22227e+00 747 2013 7 2.81931e+01 7.31042e-01 2323 2013 8 2.86870e+01 7.60670e-01 1827 2013 9 2.91985e+01 8.62549e-01 1702 2013 10 2.94225e+01 8.53516e-01 1590 2013 11 2.82603e+01 5.24350e-01 2833 2013 12 2.69298e+01 5.62479e-01 2824 2014 1 2.63201e+01 6.29975e-01 3026 2014 2 2.62631e+01 4.65703e-01 3017 2014 3 2.65798e+01 6.08000e-01 3251 2014 4 2.68287e+01 7.56049e-01 2395 2014 5 2.74086e+01 9.32152e-01 2197 2014 6 2.73254e+01 1.14549e+00 1335 2014 7 2.76925e+01 7.72831e-01 1891 2014 8 2.79217e+01 8.07666e-01 1770 2014 9 2.87436e+01 7.70044e-01 1948 2014 10 2.90591e+01 6.20840e-01 2743 2014 11 2.83957e+01 6.86224e-01 2850 2014 12 2.73504e+01 6.45443e-01 3089 2015 1 2.67632e+01 6.32396e-01 2771 2015 2 2.67476e+01 4.72113e-01 2490 2015 3 2.64226e+01 5.15099e-01 3042 2015 4 2.68271e+01 6.85084e-01 2907 2015 5 2.72660e+01 7.02464e-01 1948 2015 6 2.77309e+01 9.27846e-01 1385 2015 7 2.73505e+01 8.12032e-01 1745 2015 8 2.81404e+01 9.34868e-01 2114 2015 9 2.91358e+01 8.63622e-01 2389 2015 10 2.95803e+01 7.12546e-01 2311 2015 11 2.84686e+01 6.46747e-01 1576 2015 12 2.71874e+01 9.32826e-01 2269 2016 1 2.66817e+01 8.18693e-01 2844 2016 2 2.65918e+01 7.19708e-01 2153 2016 3 2.65561e+01 7.31511e-01 2407 2016 4 2.75127e+01 7.46571e-01 1895 2016 5 2.74806e+01 7.96600e-01 945 2016 6 2.79515e+01 8.65579e-01 1390 2016 7 2.81974e+01 6.29112e-01 2011 2016 8 2.87784e+01 6.17271e-01 2316 2016 9 2.94095e+01 7.65926e-01 2648 2016 10 2.93702e+01 8.32865e-01 1632 2016 11 2.86710e+01 6.67796e-01 1204 2016 12 2.75039e+01 6.53768e-01 3092 2017 1 2.64747e+01 5.56704e-01 2790 2017 2 2.66282e+01 5.34342e-01 3465 2017 3 2.67518e+01 5.04395e-01 2446 2017 4 2.72513e+01 7.40611e-01 2206 2017 5 2.74159e+01 9.83566e-01 2041 2017 6 2.82828e+01 6.54937e-01 2169 2017 7 2.85446e+01 6.34845e-01 2150 2017 8 2.86439e+01 6.67452e-01 1949 2017 9 2.90687e+01 1.00954e+00 1217 2017 10 2.85752e+01 6.91942e-01 2125 2017 11 2.84203e+01 6.71218e-01 1801 2017 12 2.75806e+01 7.10558e-01 3163 2018 1 2.66940e+01 5.43531e-01 2510 2018 2 2.59907e+01 4.38353e-01 2694 2018 3 2.65572e+01 6.84816e-01 2775 2018 4 2.70142e+01 6.12842e-01 2376 2018 5 2.72117e+01 5.81078e-01 2477 2018 6 2.75223e+01 8.66712e-01 1561 2018 7 2.75122e+01 8.53834e-01 683 2018 8 2.82416e+01 6.80371e-01 2675 2018 9 2.89027e+01 6.43892e-01 2399 2018 10 2.86309e+01 6.79916e-01 2087 2018 11 2.80149e+01 6.27680e-01 2736 2018 12 2.70823e+01 5.58317e-01 3187 2019 1 2.64327e+01 3.96718e-01 3074 2019 2 2.63275e+01 4.37357e-01 2374 2019 3 2.64270e+01 7.37949e-01 3124 2019 4 2.68514e+01 5.60512e-01 2599 2019 5 2.73008e+01 7.76426e-01 1156 2019 6 2.77805e+01 6.71514e-01 2381 2019 7 2.81457e+01 6.86688e-01 2161 2019 8 2.86640e+01 6.13098e-01 2307 2019 9 2.91470e+01 7.29248e-01 1618 2019 10 2.93214e+01 6.81478e-01 2550 2019 11 2.87566e+01 4.85929e-01 3043 2019 12 2.80497e+01 8.05415e-01 3061 2020 1 2.69043e+01 6.89615e-01 2891 2020 2 2.67674e+01 4.49450e-01 2694 2020 3 2.68195e+01 6.53787e-01 2405 2020 4 2.77719e+01 6.80779e-01 3096 2020 5 2.80135e+01 1.16159e+00 1632 2020 6 2.86486e+01 8.31080e-01 2157 2020 7 2.86648e+01 8.16366e-01 1856 2020 8 2.88892e+01 6.72564e-01 2002 2020 9 2.96024e+01 7.87721e-01 2376 2020 10 2.92570e+01 7.52104e-01 1918 2020 11 2.79121e+01 6.61188e-01 2112 2020 12 2.72874e+01 5.08827e-01 2937 2021 1 2.66657e+01 4.98205e-01 2935 2021 2 2.61586e+01 5.20973e-01 2898 2021 3 2.64709e+01 5.38059e-01 3791 2021 4 2.69758e+01 7.66043e-01 2369 2021 5 2.72580e+01 8.32521e-01 2469 2021 6 2.76643e+01 9.72255e-01 1377 2021 7 2.78119e+01 6.37210e-01 1813 2021 8 2.84747e+01 6.15326e-01 1985 2021 9 2.93600e+01 6.01586e-01 2709 2021 10 2.92815e+01 7.52563e-01 2191 2021 11 2.86619e+01 6.28615e-01 2391 2021 12 2.76093e+01 7.03186e-01 3548 2022 1 2.68010e+01 3.91788e-01 3622 2022 2 2.64452e+01 4.61180e-01 3086 2022 3 2.65115e+01 5.47910e-01 3321 2022 4 2.65829e+01 9.32516e-01 807 2022 5 2.73935e+01 8.47221e-01 2261 2022 6 2.83158e+01 7.08952e-01 1958 2022 7 2.79868e+01 5.90890e-01 1528 2022 8 2.86068e+01 8.19850e-01 2213 2022 9 2.93040e+01 7.37219e-01 1473 2022 10 2.91657e+01 7.00678e-01 2111 2022 11 2.80221e+01 5.78535e-01 2548 2022 12 2.71272e+01 5.30353e-01 3619 2023 1 2.65798e+01 4.08854e-01 3182 2023 2 2.59344e+01 3.76051e-01 2863 2023 3 2.64517e+01 4.79697e-01 3652 2023 4 2.71996e+01 7.20325e-01 3229 2023 5 2.84622e+01 7.32411e-01 1980 2023 6 2.85908e+01 7.59871e-01 2070 2023 7 2.85363e+01 8.51423e-01 1359 2023 8 2.95681e+01 5.76001e-01 1929 2023 9 3.01498e+01 1.00286e+00 2334 2023 10 3.00638e+01 1.19318e+00 1671 2023 11 2.86201e+01 7.36058e-01 2447 2023 12 2.78997e+01 6.62679e-01 3052 2024 1 2.71144e+01 4.98018e-01 3016 2024 2 2.69265e+01 5.58333e-01 2308 2024 3 2.74928e+01 7.67439e-01 3321 2024 4 2.75950e+01 4.48518e-01 312