YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.57338e+01 1.76450e-01 192 2000 3 2.59829e+01 6.68588e-01 696 2000 4 2.64440e+01 5.99092e-01 583 2000 5 2.75108e+01 9.78513e-01 612 2000 6 2.69611e+01 7.95037e-01 427 2000 7 2.78417e+01 6.76818e-01 511 2000 8 2.86633e+01 4.53382e-01 256 2000 9 2.89909e+01 6.18949e-01 707 2000 10 2.91224e+01 4.78032e-01 691 2000 11 2.81020e+01 8.27278e-01 815 2000 12 2.73956e+01 4.37436e-01 768 2001 1 2.63290e+01 3.72759e-01 413 2001 2 2.62187e+01 5.52711e-01 689 2001 3 2.61821e+01 4.56696e-01 612 2001 4 2.66667e+01 6.91736e-01 644 2001 5 2.73816e+01 6.91693e-01 580 2001 6 2.70849e+01 1.09193e+00 379 2001 7 2.80497e+01 8.54296e-01 580 2001 8 2.78632e+01 1.01552e+00 716 2001 9 2.90268e+01 7.03913e-01 812 2001 10 2.91813e+01 6.18001e-01 576 2001 11 2.83614e+01 9.31927e-01 692 2001 12 2.78400e+01 3.41911e-01 637 2002 1 2.71738e+01 5.95960e-01 694 2002 2 2.63173e+01 6.20682e-01 873 2002 3 2.63524e+01 5.89744e-01 614 2002 4 2.67330e+01 3.37169e-01 759 2002 5 2.73256e+01 6.20719e-01 617 2002 6 2.76421e+01 5.17316e-01 303 2002 7 2.77053e+01 9.78891e-01 1713 2002 8 2.85483e+01 8.03741e-01 1398 2002 9 2.87883e+01 5.90611e-01 1685 2002 10 2.87136e+01 5.70519e-01 3147 2002 11 2.84571e+01 4.78526e-01 3164 2002 12 2.76275e+01 4.55455e-01 3385 2003 1 2.69696e+01 5.19991e-01 3256 2003 2 2.65719e+01 4.86618e-01 2507 2003 3 2.67392e+01 4.43077e-01 3161 2003 4 2.73363e+01 6.51238e-01 1957 2003 5 2.72085e+01 7.27633e-01 1894 2003 6 2.73838e+01 8.91143e-01 997 2003 7 2.74112e+01 9.15951e-01 1232 2003 8 2.83743e+01 5.72852e-01 1534 2003 9 2.90553e+01 6.61444e-01 2159 2003 10 2.94430e+01 7.44180e-01 3052 2003 11 2.83954e+01 6.78406e-01 1744 2003 12 2.75186e+01 6.54256e-01 2442 2004 1 2.67458e+01 5.68734e-01 3202 2004 2 2.66344e+01 5.16125e-01 2919 2004 3 2.63826e+01 4.40672e-01 3179 2004 4 2.72127e+01 6.38694e-01 2916 2004 5 2.72953e+01 6.91242e-01 1715 2004 6 2.74167e+01 8.33732e-01 1342 2004 7 2.77380e+01 7.55546e-01 1602 2004 8 2.80876e+01 6.98504e-01 1927 2004 9 2.87970e+01 5.78054e-01 1746 2004 10 2.90031e+01 7.20682e-01 2477 2004 11 2.78273e+01 7.55132e-01 2147 2004 12 2.70455e+01 4.42957e-01 3399 2005 1 2.63190e+01 5.15463e-01 2117 2005 2 2.57157e+01 5.46446e-01 2559 2005 3 2.65127e+01 4.72010e-01 3603 2005 4 2.74169e+01 6.63586e-01 2277 2005 5 2.81459e+01 6.95799e-01 1719 2005 6 2.85759e+01 7.60972e-01 1346 2005 7 2.86568e+01 7.36205e-01 1750 2005 8 2.89783e+01 7.34324e-01 1463 2005 9 2.93295e+01 1.02222e+00 2075 2005 10 2.90092e+01 7.89631e-01 1227 2005 11 2.84966e+01 6.10703e-01 2247 2005 12 2.76888e+01 5.13820e-01 2767 2006 1 2.68294e+01 4.37277e-01 2735 2006 2 2.64992e+01 3.67951e-01 3179 2006 3 2.64052e+01 5.65277e-01 3002 2006 4 2.71252e+01 9.98283e-01 2580 2006 5 2.78062e+01 5.78469e-01 2343 2006 6 2.80817e+01 8.82116e-01 1352 2006 7 2.82151e+01 7.23423e-01 1605 2006 8 2.82776e+01 6.84767e-01 2009 2006 9 2.93025e+01 5.78998e-01 2444 2006 10 2.93324e+01 7.48275e-01 2178 2006 11 2.89332e+01 5.64961e-01 3263 2006 12 2.79091e+01 6.31104e-01 3239 2007 1 2.69586e+01 5.16522e-01 3169 2007 2 2.66887e+01 4.15514e-01 2949 2007 3 2.66015e+01 6.34093e-01 2156 2007 4 2.71414e+01 6.00431e-01 2900 2007 5 2.82290e+01 6.60494e-01 1749 2007 6 2.80140e+01 9.78898e-01 1501 2007 7 2.79997e+01 7.21262e-01 1431 2007 8 2.84393e+01 7.06155e-01 1327 2007 9 2.86719e+01 1.04421e+00 2235 2007 10 2.91966e+01 4.15849e-01 1432 2007 11 2.82357e+01 6.20133e-01 2205 2007 12 2.74127e+01 4.13549e-01 3076 2008 1 2.68134e+01 4.66743e-01 3537 2008 2 2.61852e+01 3.88012e-01 2577 2008 3 2.62190e+01 5.28626e-01 2910 2008 4 2.63701e+01 7.21829e-01 2624 2008 5 2.73245e+01 7.78895e-01 2469 2008 6 2.78836e+01 7.87805e-01 1413 2008 7 2.78842e+01 7.34199e-01 2144 2008 8 2.87703e+01 6.71744e-01 2369 2008 9 2.88127e+01 7.94309e-01 1777 2008 10 2.88372e+01 5.70715e-01 2925 2008 11 2.85335e+01 7.84766e-01 2463 2008 12 2.68826e+01 6.61732e-01 2896 2009 1 2.63162e+01 4.37456e-01 3253 2009 2 2.62872e+01 3.32475e-01 2193 2009 3 2.58052e+01 6.02433e-01 2387 2009 4 2.62149e+01 6.60877e-01 2471 2009 5 2.70134e+01 9.52865e-01 1532 2009 6 2.78825e+01 7.02825e-01 1493 2009 7 2.79134e+01 9.33118e-01 1632 2009 8 2.82136e+01 7.12097e-01 2113 2009 9 2.89529e+01 1.01779e+00 2302 2009 10 2.91096e+01 5.73876e-01 2612 2009 11 2.86436e+01 6.15721e-01 3418 2009 12 2.78802e+01 5.67269e-01 3170 2010 1 2.73761e+01 5.48368e-01 2083 2010 2 2.69516e+01 5.37631e-01 2447 2010 3 2.74646e+01 6.25000e-01 2773 2010 4 2.73915e+01 6.47563e-01 2267 2010 5 2.80615e+01 8.28635e-01 1406 2010 6 2.87191e+01 7.02038e-01 1635 2010 7 2.82655e+01 7.92160e-01 851 2010 8 2.92990e+01 8.25910e-01 2223 2010 9 2.91640e+01 7.80268e-01 1766 2010 10 2.91900e+01 7.23233e-01 1864 2010 11 2.77761e+01 5.18640e-01 1700 2010 12 2.71797e+01 8.03782e-01 2047 2011 1 2.63713e+01 4.63331e-01 2780 2011 2 2.62046e+01 5.06428e-01 2641 2011 3 2.60548e+01 5.58947e-01 3200 2011 4 2.66027e+01 5.83647e-01 2726 2011 5 2.73887e+01 7.73342e-01 1618 2011 6 2.84289e+01 8.34250e-01 1169 2011 7 2.83401e+01 7.73445e-01 1823 2011 8 2.83574e+01 5.03859e-01 1996 2011 9 2.90811e+01 8.15629e-01 1920 2011 10 2.92252e+01 5.75589e-01 2533 2011 11 2.82408e+01 6.48316e-01 2202 2011 12 2.78452e+01 5.52770e-01 3012 2012 1 2.68238e+01 4.88550e-01 3622 2012 2 2.63455e+01 4.78753e-01 2841 2012 3 2.62431e+01 6.97333e-01 2645 2012 4 2.66281e+01 8.76705e-01 2364 2012 5 2.75129e+01 7.24499e-01 2265 2012 6 2.78079e+01 7.07766e-01 2068 2012 7 2.78496e+01 8.13147e-01 1447 2012 8 2.82837e+01 5.42976e-01 1751 2012 9 2.90641e+01 6.27988e-01 2655 2012 10 2.90902e+01 8.50880e-01 1685 2012 11 2.89434e+01 6.47454e-01 2972 2012 12 2.80212e+01 5.48985e-01 2986 2013 1 2.69597e+01 4.70087e-01 3077 2013 2 2.64477e+01 4.06347e-01 3274 2013 3 2.62989e+01 6.63909e-01 2664 2013 4 2.69944e+01 4.63828e-01 2714 2013 5 2.80582e+01 8.43867e-01 1670 2013 6 2.72799e+01 7.97989e-01 1180 2013 7 2.80815e+01 7.03916e-01 1997 2013 8 2.86515e+01 6.10015e-01 2039 2013 9 2.91806e+01 8.43032e-01 2325 2013 10 2.95285e+01 9.24357e-01 2212 2013 11 2.85518e+01 4.31681e-01 2506 2013 12 2.74190e+01 4.76150e-01 2852 2014 1 2.67815e+01 4.54286e-01 2945 2014 2 2.65966e+01 3.54070e-01 2929 2014 3 2.66565e+01 5.34760e-01 3671 2014 4 2.69338e+01 5.84392e-01 2883 2014 5 2.75495e+01 6.57050e-01 1667 2014 6 2.77568e+01 5.71367e-01 1194 2014 7 2.75707e+01 9.82536e-01 1738 2014 8 2.79461e+01 5.45801e-01 1234 2014 9 2.89085e+01 7.23776e-01 1493 2014 10 2.91868e+01 7.63597e-01 3026 2014 11 2.87945e+01 5.80852e-01 2261 2014 12 2.77447e+01 5.78385e-01 2932 2015 1 2.69940e+01 4.36985e-01 3346 2015 2 2.69070e+01 7.18589e-01 2531 2015 3 2.67909e+01 4.86447e-01 3074 2015 4 2.68651e+01 5.17789e-01 3061 2015 5 2.72680e+01 5.22668e-01 1681 2015 6 2.74308e+01 7.21334e-01 1308 2015 7 2.73988e+01 8.44765e-01 1598 2015 8 2.80429e+01 9.09969e-01 2021 2015 9 2.89253e+01 6.63958e-01 2432 2015 10 2.98257e+01 6.46841e-01 2102 2015 11 2.86396e+01 6.21869e-01 1616 2015 12 2.77162e+01 6.63524e-01 2282 2016 1 2.71339e+01 4.21728e-01 2327 2016 2 2.69523e+01 4.37204e-01 2497 2016 3 2.69355e+01 5.43166e-01 2718 2016 4 2.74019e+01 8.44369e-01 2279 2016 5 2.81087e+01 7.75711e-01 1749 2016 6 2.80414e+01 8.99287e-01 1272 2016 7 2.83284e+01 6.56728e-01 2267 2016 8 2.87336e+01 8.91868e-01 2096 2016 9 2.95941e+01 6.49401e-01 2896 2016 10 2.91787e+01 8.57192e-01 1955 2016 11 2.88195e+01 5.45122e-01 1482 2016 12 2.80814e+01 4.92547e-01 3329 2017 1 2.69438e+01 5.56226e-01 2928 2017 2 2.66097e+01 5.25504e-01 2854 2017 3 2.66112e+01 5.31752e-01 2250 2017 4 2.72559e+01 6.20556e-01 2047 2017 5 2.77192e+01 6.12288e-01 1826 2017 6 2.81245e+01 6.37986e-01 2076 2017 7 2.84883e+01 7.10612e-01 1687 2017 8 2.88782e+01 5.15981e-01 2451 2017 9 2.89032e+01 1.07646e+00 1304 2017 10 2.88882e+01 7.65912e-01 2191 2017 11 2.85488e+01 6.96135e-01 1555 2017 12 2.79582e+01 5.12396e-01 3258 2018 1 2.71283e+01 6.55724e-01 2775 2018 2 2.64118e+01 4.70410e-01 2287 2018 3 2.65107e+01 4.58971e-01 2949 2018 4 2.71230e+01 7.21736e-01 2414 2018 5 2.71054e+01 5.56820e-01 1726 2018 6 2.75030e+01 6.53616e-01 1196 2018 7 2.75899e+01 7.91426e-01 951 2018 8 2.83984e+01 6.58123e-01 1781 2018 9 2.87226e+01 8.33946e-01 2083 2018 10 2.88771e+01 7.19749e-01 1883 2018 11 2.82895e+01 6.22046e-01 3237 2018 12 2.75224e+01 5.86116e-01 3449 2019 1 2.67280e+01 5.40900e-01 3443 2019 2 2.65927e+01 5.33162e-01 2670 2019 3 2.65474e+01 6.93795e-01 2357 2019 4 2.70142e+01 5.17582e-01 2659 2019 5 2.72717e+01 6.22661e-01 1419 2019 6 2.78765e+01 7.57599e-01 1986 2019 7 2.79627e+01 9.48413e-01 2253 2019 8 2.85649e+01 7.99695e-01 2453 2019 9 2.93595e+01 6.10410e-01 1933 2019 10 2.94781e+01 7.06216e-01 2897 2019 11 2.88488e+01 5.58410e-01 3224 2019 12 2.84608e+01 7.16363e-01 3205 2020 1 2.72386e+01 5.34919e-01 2703 2020 2 2.70420e+01 5.13795e-01 2756 2020 3 2.69342e+01 6.34760e-01 2540 2020 4 2.75391e+01 6.05652e-01 3140 2020 5 2.79712e+01 9.61442e-01 2081 2020 6 2.86256e+01 8.56368e-01 1937 2020 7 2.87929e+01 5.93089e-01 1644 2020 8 2.90361e+01 6.82522e-01 2268 2020 9 2.96149e+01 6.22826e-01 2460 2020 10 2.95067e+01 7.95028e-01 2045 2020 11 2.82441e+01 6.49698e-01 1497 2020 12 2.77691e+01 5.74784e-01 3514 2021 1 2.69893e+01 5.95787e-01 2913 2021 2 2.68802e+01 3.60828e-01 3143 2021 3 2.65256e+01 5.90432e-01 3251 2021 4 2.68873e+01 5.48385e-01 2338 2021 5 2.73399e+01 7.27750e-01 2479 2021 6 2.78317e+01 8.13530e-01 1401 2021 7 2.78057e+01 7.58649e-01 2298 2021 8 2.85515e+01 5.53908e-01 1696 2021 9 2.91428e+01 8.96451e-01 3046 2021 10 2.94585e+01 6.95330e-01 3293 2021 11 2.88942e+01 6.41637e-01 2889 2021 12 2.77498e+01 6.27929e-01 3271 2022 1 2.72352e+01 4.64242e-01 3786 2022 2 2.68819e+01 4.23091e-01 2724 2022 3 2.68308e+01 4.99742e-01 2262 2022 4 2.67774e+01 6.63247e-01 1194 2022 5 2.72855e+01 8.52211e-01 2245 2022 6 2.79191e+01 7.35696e-01 1783 2022 7 2.79436e+01 4.63291e-01 1678 2022 8 2.86069e+01 8.46393e-01 2028 2022 9 2.92233e+01 6.31704e-01 2230 2022 10 2.92828e+01 6.74744e-01 1731 2022 11 2.80757e+01 5.35420e-01 2715 2022 12 2.72563e+01 4.61000e-01 3304 2023 1 2.67247e+01 5.82714e-01 3269 2023 2 2.62019e+01 4.25954e-01 2624 2023 3 2.62932e+01 5.59694e-01 3145 2023 4 2.69943e+01 6.51741e-01 2791 2023 5 2.83831e+01 6.52864e-01 2565 2023 6 2.87936e+01 6.82209e-01 1981 2023 7 2.87373e+01 5.25257e-01 1260 2023 8 2.93895e+01 8.63723e-01 1262 2023 9 2.97575e+01 9.41585e-01 2605 2023 10 3.00301e+01 8.60134e-01 2360 2023 11 2.91057e+01 9.66453e-01 2100 2023 12 2.82782e+01 5.69853e-01 3170 2024 1 2.75327e+01 4.97306e-01 3156 2024 2 2.70176e+01 6.49202e-01 2680 2024 3 2.71891e+01 6.53127e-01 2764 2024 4 2.73908e+01 8.54454e-01 266