YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.46332e+01 4.68637e-01 132 2000 3 2.48933e+01 4.44493e-01 457 2000 4 2.53393e+01 3.56382e-01 653 2000 5 2.66517e+01 1.03915e+00 569 2000 6 2.80782e+01 6.39055e-01 287 2000 7 2.95463e+01 7.46223e-01 570 2000 8 2.90569e+01 1.08678e+00 378 2000 9 2.97461e+01 4.68728e-01 373 2000 10 2.77143e+01 7.63722e-01 486 2000 11 2.64598e+01 4.23404e-01 590 2000 12 2.45811e+01 7.31036e-01 383 2001 1 2.34234e+01 1.29792e+00 700 2001 2 2.37540e+01 7.10675e-01 817 2001 3 2.41887e+01 6.83986e-01 768 2001 4 2.55357e+01 7.71507e-01 800 2001 5 2.60502e+01 1.12361e+00 441 2001 6 2.74269e+01 1.49450e+00 319 2001 7 2.78378e+01 1.03062e+00 373 2001 8 2.83371e+01 1.33117e+00 744 2001 9 2.86009e+01 1.65840e+00 238 2001 10 2.74968e+01 9.10546e-01 242 2001 11 2.59721e+01 1.07373e+00 382 2001 12 2.53520e+01 4.14487e-01 475 2002 1 2.38498e+01 7.75824e-01 748 2002 2 2.36906e+01 1.67438e-01 186 2002 3 2.48452e+01 1.61631e+00 434 2002 4 2.65288e+01 1.03371e+00 673 2002 5 2.69646e+01 8.15257e-01 780 2002 6 2.84143e+01 8.49410e-01 151 2002 7 2.88567e+01 1.18843e+00 2077 2002 8 2.95030e+01 8.27464e-01 1748 2002 9 2.87574e+01 7.03136e-01 2028 2002 10 2.79448e+01 6.87541e-01 3347 2002 11 2.72106e+01 9.26392e-01 2035 2002 12 2.51565e+01 1.15775e+00 2023 2003 1 2.33042e+01 1.23754e+00 2215 2003 2 2.31075e+01 1.02025e+00 2017 2003 3 2.54266e+01 8.10667e-01 2475 2003 4 2.55247e+01 1.20351e+00 2657 2003 5 2.73725e+01 1.03614e+00 2619 2003 6 2.82014e+01 6.87051e-01 1087 2003 7 2.86882e+01 8.85942e-01 1773 2003 8 2.96943e+01 9.51610e-01 2278 2003 9 2.90406e+01 7.84004e-01 1865 2003 10 2.84304e+01 9.58220e-01 2614 2003 11 2.71758e+01 5.71714e-01 1571 2003 12 2.50059e+01 8.84728e-01 1850 2004 1 2.49256e+01 8.35961e-01 2441 2004 2 2.40731e+01 9.80083e-01 1825 2004 3 2.46576e+01 1.08126e+00 2228 2004 4 2.47248e+01 9.24394e-01 2505 2004 5 2.62467e+01 1.26273e+00 2760 2004 6 2.86810e+01 9.35168e-01 2652 2004 7 2.93227e+01 1.00996e+00 2282 2004 8 3.00807e+01 8.54949e-01 1822 2004 9 2.89139e+01 1.04237e+00 2183 2004 10 2.80421e+01 7.13702e-01 2188 2004 11 2.67241e+01 9.53973e-01 2309 2004 12 2.57212e+01 1.33346e+00 1640 2005 1 2.41133e+01 1.04949e+00 2755 2005 2 2.36672e+01 1.13642e+00 1752 2005 3 2.38405e+01 8.69327e-01 2344 2005 4 2.41931e+01 7.48115e-01 2705 2005 5 2.61346e+01 1.59401e+00 2641 2005 6 2.78933e+01 1.34146e+00 1475 2005 7 2.90214e+01 9.88566e-01 2523 2005 8 2.99506e+01 1.14969e+00 2616 2005 9 2.89220e+01 1.13298e+00 2796 2005 10 2.80470e+01 1.11826e+00 1286 2005 11 2.59441e+01 6.26896e-01 2775 2005 12 2.43092e+01 1.08090e+00 2579 2006 1 2.34102e+01 1.02826e+00 1728 2006 2 2.38134e+01 8.63596e-01 2484 2006 3 2.48824e+01 1.20972e+00 2834 2006 4 2.58694e+01 1.19760e+00 3174 2006 5 2.71051e+01 8.42397e-01 2666 2006 6 2.83559e+01 9.90217e-01 2053 2006 7 2.88398e+01 1.19803e+00 1534 2006 8 2.97975e+01 9.36845e-01 2213 2006 9 3.00024e+01 1.05173e+00 2169 2006 10 2.86150e+01 1.09396e+00 2229 2006 11 2.64367e+01 1.16826e+00 1818 2006 12 2.50996e+01 1.14387e+00 1054 2007 1 2.49170e+01 7.39969e-01 2259 2007 2 2.40646e+01 9.91669e-01 1711 2007 3 2.43849e+01 7.96587e-01 1830 2007 4 2.53589e+01 1.04926e+00 3041 2007 5 2.70628e+01 1.03079e+00 2708 2007 6 2.80301e+01 1.29263e+00 1966 2007 7 2.98927e+01 9.27931e-01 2531 2007 8 2.94508e+01 9.97819e-01 2397 2007 9 2.95599e+01 9.57180e-01 1944 2007 10 2.78567e+01 1.08005e+00 1395 2007 11 2.65343e+01 1.02249e+00 2543 2007 12 2.54334e+01 8.77003e-01 2166 2008 1 2.46420e+01 1.04411e+00 2014 2008 2 2.43631e+01 1.09352e+00 2532 2008 3 2.42994e+01 6.44735e-01 1816 2008 4 2.58284e+01 8.80064e-01 3371 2008 5 2.68803e+01 1.12800e+00 3400 2008 6 2.80024e+01 9.43504e-01 2466 2008 7 2.86344e+01 9.75093e-01 2407 2008 8 2.95239e+01 1.12120e+00 2537 2008 9 2.83355e+01 8.65362e-01 2306 2008 10 2.82456e+01 9.33490e-01 1005 2008 11 2.58706e+01 6.91918e-01 2158 2008 12 2.45450e+01 8.70070e-01 2158 2009 1 2.35187e+01 9.62861e-01 2555 2009 2 2.30923e+01 8.66780e-01 2273 2009 3 2.40274e+01 1.03034e+00 2046 2009 4 2.48633e+01 6.60399e-01 3052 2009 5 2.66719e+01 1.00833e+00 3225 2009 6 2.90311e+01 1.22315e+00 2163 2009 7 2.94414e+01 1.03253e+00 2698 2009 8 2.95184e+01 7.89179e-01 2945 2009 9 2.97738e+01 1.19383e+00 2083 2009 10 2.91256e+01 1.20672e+00 2928 2009 11 2.73836e+01 1.21985e+00 2028 2009 12 2.55730e+01 1.03584e+00 2248 2010 1 2.41069e+01 1.48152e+00 2026 2010 2 2.32375e+01 9.82682e-01 1399 2010 3 2.22985e+01 1.03853e+00 2141 2010 4 2.45077e+01 1.03295e+00 2064 2010 5 2.72434e+01 1.46088e+00 3079 2010 6 2.96032e+01 8.66274e-01 2824 2010 7 2.88361e+01 1.37225e+00 1566 2010 8 2.98794e+01 9.74615e-01 2040 2010 9 2.93375e+01 9.83919e-01 2026 2010 10 2.79162e+01 9.33554e-01 2501 2010 11 2.68286e+01 1.09802e+00 2374 2010 12 2.48351e+01 1.39324e+00 3175 2011 1 2.27304e+01 1.20567e+00 2408 2011 2 2.26958e+01 8.51811e-01 3174 2011 3 2.44035e+01 1.08116e+00 2738 2011 4 2.59671e+01 8.11149e-01 3729 2011 5 2.70867e+01 7.36022e-01 3354 2011 6 2.83271e+01 1.16017e+00 2330 2011 7 2.94891e+01 1.08189e+00 2177 2011 8 2.98672e+01 1.07030e+00 2004 2011 9 2.97814e+01 1.04565e+00 2319 2011 10 2.80228e+01 1.26598e+00 1061 2011 11 2.60019e+01 1.01740e+00 2104 2011 12 2.50546e+01 1.00248e+00 2195 2012 1 2.41770e+01 6.42216e-01 2125 2012 2 2.44975e+01 8.21606e-01 1906 2012 3 2.49662e+01 8.51027e-01 2829 2012 4 2.60138e+01 8.81216e-01 2358 2012 5 2.66028e+01 1.19640e+00 1905 2012 6 2.82711e+01 1.15310e+00 1519 2012 7 2.85451e+01 1.26108e+00 2495 2012 8 2.93256e+01 1.12866e+00 2053 2012 9 2.91304e+01 8.75892e-01 1629 2012 10 2.83506e+01 7.85956e-01 1981 2012 11 2.72933e+01 9.68444e-01 2322 2012 12 2.55665e+01 9.25596e-01 2141 2013 1 2.44962e+01 8.80333e-01 1810 2013 2 2.46564e+01 8.98641e-01 2386 2013 3 2.43145e+01 9.62383e-01 2277 2013 4 2.55291e+01 1.31394e+00 2536 2013 5 2.67551e+01 6.97350e-01 2698 2013 6 2.81224e+01 7.51772e-01 1502 2013 7 2.90501e+01 8.87795e-01 1623 2013 8 2.92055e+01 8.23501e-01 1879 2013 9 2.92164e+01 8.03801e-01 1590 2013 10 2.85656e+01 7.95671e-01 2535 2013 11 2.70876e+01 1.12608e+00 1191 2013 12 2.59276e+01 8.08936e-01 2167 2014 1 2.52860e+01 1.27848e+00 1844 2014 2 2.53062e+01 8.81234e-01 2891 2014 3 2.47489e+01 8.30980e-01 2630 2014 4 2.58590e+01 1.17424e+00 2714 2014 5 2.64350e+01 1.05095e+00 1712 2014 6 2.85955e+01 1.10017e+00 2266 2014 7 2.96435e+01 8.47508e-01 2412 2014 8 3.05637e+01 7.85220e-01 3035 2014 9 2.98395e+01 1.00738e+00 1309 2014 10 2.84854e+01 1.30182e+00 2229 2014 11 2.64619e+01 9.48415e-01 2590 2014 12 2.57774e+01 8.83322e-01 1973 2015 1 2.51592e+01 8.02993e-01 2101 2015 2 2.40465e+01 8.90875e-01 2246 2015 3 2.47728e+01 9.94623e-01 3368 2015 4 2.63026e+01 1.51797e+00 2622 2015 5 2.73220e+01 7.97970e-01 3105 2015 6 2.86577e+01 9.50095e-01 2331 2015 7 2.94566e+01 1.35162e+00 1836 2015 8 3.02853e+01 1.13701e+00 2519 2015 9 3.04719e+01 9.72467e-01 1648 2015 10 2.85005e+01 1.07058e+00 2299 2015 11 2.76563e+01 8.08870e-01 2735 2015 12 2.59709e+01 6.66140e-01 1901 2016 1 2.61757e+01 7.85716e-01 955 2016 2 2.48952e+01 8.84274e-01 1672 2016 3 2.49713e+01 1.41015e+00 1624 2016 4 2.63156e+01 8.91575e-01 2632 2016 5 2.76643e+01 1.14806e+00 3325 2016 6 2.88326e+01 7.96597e-01 1917 2016 7 2.94404e+01 7.87239e-01 2410 2016 8 2.97696e+01 1.07440e+00 2188 2016 9 2.95902e+01 1.03415e+00 2169 2016 10 2.90411e+01 8.30353e-01 1825 2016 11 2.71079e+01 1.12024e+00 1755 2016 12 2.60075e+01 8.84867e-01 2095 2017 1 2.50798e+01 9.05788e-01 1589 2017 2 2.45295e+01 9.36659e-01 2432 2017 3 2.53522e+01 8.90134e-01 2351 2017 4 2.58162e+01 6.92969e-01 1837 2017 5 2.70155e+01 1.29423e+00 2779 2017 6 2.83852e+01 1.17760e+00 1645 2017 7 2.94699e+01 8.56259e-01 2298 2017 8 2.99491e+01 1.01859e+00 2321 2017 9 2.97188e+01 1.13402e+00 2690 2017 10 2.85123e+01 9.05828e-01 2064 2017 11 2.67169e+01 5.51992e-01 2879 2017 12 2.60283e+01 9.53497e-01 3519 2018 1 2.41285e+01 1.32482e+00 1381 2018 2 2.43257e+01 1.13812e+00 2725 2018 3 2.53694e+01 9.57842e-01 3405 2018 4 2.57695e+01 8.73910e-01 3221 2018 5 2.56319e+01 7.10714e-01 721 2018 6 2.85983e+01 9.62736e-01 1815 2018 7 3.00499e+01 1.27644e+00 1799 2018 8 2.98174e+01 8.41401e-01 2906 2018 9 2.95499e+01 7.20853e-01 2535 2018 10 2.82798e+01 8.38348e-01 2893 2018 11 2.72545e+01 8.51442e-01 2289 2018 12 2.58111e+01 1.61572e+00 1844 2019 1 2.48763e+01 1.17602e+00 2300 2019 2 2.51304e+01 1.03892e+00 2914 2019 3 2.59702e+01 1.02118e+00 2861 2019 4 2.59963e+01 6.02861e-01 3030 2019 5 2.72433e+01 8.62249e-01 3001 2019 6 2.95863e+01 1.24738e+00 2252 2019 7 2.97081e+01 1.15094e+00 2548 2019 8 3.00371e+01 1.09401e+00 2090 2019 9 2.92671e+01 1.16838e+00 1893 2019 10 2.86276e+01 9.92986e-01 2611 2019 11 2.76275e+01 9.98113e-01 2551 2019 12 2.56539e+01 1.19469e+00 2077 2020 1 2.51560e+01 9.02146e-01 2787 2020 2 2.56282e+01 1.22920e+00 1938 2020 3 2.50381e+01 8.95919e-01 3290 2020 4 2.70308e+01 1.04307e+00 2405 2020 5 2.77344e+01 1.21101e+00 1843 2020 6 2.91061e+01 7.47474e-01 1630 2020 7 2.96311e+01 1.11429e+00 1951 2020 8 3.00565e+01 9.39757e-01 2257 2020 9 2.98368e+01 8.51684e-01 2005 2020 10 2.87801e+01 1.15344e+00 1818 2020 11 2.70644e+01 9.46904e-01 1925 2020 12 2.59198e+01 1.24665e+00 2274 2021 1 2.44391e+01 1.11539e+00 2068 2021 2 2.44705e+01 1.01892e+00 2573 2021 3 2.50182e+01 8.07187e-01 3080 2021 4 2.60131e+01 8.13996e-01 2521 2021 5 2.73551e+01 1.06137e+00 2463 2021 6 2.78595e+01 1.06719e+00 1322 2021 7 2.91250e+01 1.22950e+00 2893 2021 8 2.97610e+01 1.04212e+00 2144 2021 9 2.99819e+01 1.13402e+00 2528 2021 10 2.89023e+01 9.06376e-01 2504 2021 11 2.69010e+01 8.42107e-01 1786 2021 12 2.61150e+01 7.99963e-01 3402 2022 1 2.55060e+01 8.34116e-01 2057 2022 2 2.46442e+01 1.20989e+00 2494 2022 3 2.57699e+01 1.03235e+00 2824 2022 4 2.60383e+01 9.38255e-01 1415 2022 5 2.73630e+01 9.87774e-01 3225 2022 6 2.87901e+01 1.15087e+00 2237 2022 7 2.95959e+01 8.25974e-01 2484 2022 8 3.02045e+01 8.88048e-01 2184 2022 9 3.04697e+01 1.05108e+00 2380 2022 10 2.80880e+01 7.91101e-01 2074 2022 11 2.73191e+01 6.00392e-01 2527 2022 12 2.64692e+01 7.91710e-01 2270 2023 1 2.54899e+01 8.78083e-01 2686 2023 2 2.52174e+01 1.03388e+00 2846 2023 3 2.55465e+01 7.56996e-01 3107 2023 4 2.65990e+01 1.07682e+00 2569 2023 5 2.76969e+01 1.30083e+00 2618 2023 6 2.94707e+01 1.13017e+00 1787 2023 7 3.08850e+01 9.53133e-01 2192 2023 8 3.09926e+01 8.26762e-01 1999 2023 9 3.06605e+01 9.71693e-01 2126 2023 10 2.94017e+01 1.09570e+00 2593 2023 11 2.77668e+01 7.74918e-01 2024 2023 12 2.63870e+01 8.64997e-01 1262 2024 1 2.54573e+01 8.49726e-01 1375 2024 2 2.42888e+01 7.81416e-01 2119 2024 3 2.53366e+01 9.26409e-01 1934 2024 4 2.38152e+01 2.06910e-01 28