YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.41616e+01 5.65541e-01 143 2000 3 2.48331e+01 5.94556e-01 756 2000 4 2.54769e+01 4.86624e-01 655 2000 5 2.68793e+01 1.05094e+00 304 2000 6 2.81594e+01 9.45481e-01 333 2000 7 2.96226e+01 7.69328e-01 551 2000 8 2.90114e+01 1.36006e+00 502 2000 9 2.99440e+01 1.08347e+00 209 2000 10 2.79068e+01 9.91648e-01 324 2000 11 2.63718e+01 7.26074e-01 325 2000 12 2.43777e+01 8.26153e-01 281 2001 1 2.32207e+01 9.14764e-01 768 2001 2 2.39803e+01 8.06129e-01 663 2001 3 2.40422e+01 9.62522e-01 712 2001 4 2.52896e+01 7.83199e-01 712 2001 5 2.59665e+01 1.19224e+00 352 2001 6 2.82324e+01 9.15723e-01 369 2001 7 2.79654e+01 1.36216e+00 461 2001 8 2.88844e+01 8.96655e-01 717 2001 9 2.80584e+01 1.71523e+00 320 2001 10 2.73472e+01 7.32870e-01 399 2001 11 2.64640e+01 8.65839e-01 332 2001 12 2.54519e+01 5.04760e-01 547 2002 1 2.37893e+01 1.33250e+00 762 2002 2 2.36393e+01 1.11849e+00 297 2002 3 2.52445e+01 1.09022e+00 554 2002 4 2.68258e+01 6.77347e-01 600 2002 5 2.73726e+01 8.57835e-01 663 2002 6 2.84311e+01 7.26689e-01 146 2002 7 2.90551e+01 1.16105e+00 2200 2002 8 2.91175e+01 1.33242e+00 1714 2002 9 2.87359e+01 9.22158e-01 1894 2002 10 2.81083e+01 5.67476e-01 3178 2002 11 2.69684e+01 1.21930e+00 2247 2002 12 2.50981e+01 1.02223e+00 1840 2003 1 2.32954e+01 1.19042e+00 2210 2003 2 2.30317e+01 9.68776e-01 2607 2003 3 2.54935e+01 8.60274e-01 2218 2003 4 2.54511e+01 9.79419e-01 2224 2003 5 2.73720e+01 1.02115e+00 2723 2003 6 2.83664e+01 7.64867e-01 1149 2003 7 2.86940e+01 8.96868e-01 1953 2003 8 2.96173e+01 9.97681e-01 1842 2003 9 2.90988e+01 6.85815e-01 1549 2003 10 2.85844e+01 9.76528e-01 2305 2003 11 2.68281e+01 8.24515e-01 1540 2003 12 2.48122e+01 1.11389e+00 1464 2004 1 2.48198e+01 9.57747e-01 2424 2004 2 2.38756e+01 9.07107e-01 1997 2004 3 2.48454e+01 1.12921e+00 2027 2004 4 2.45805e+01 9.14174e-01 2804 2004 5 2.61176e+01 1.16234e+00 3021 2004 6 2.87128e+01 8.98890e-01 2605 2004 7 2.94702e+01 8.96295e-01 1951 2004 8 2.98457e+01 1.15278e+00 1529 2004 9 2.89329e+01 1.02612e+00 2110 2004 10 2.76355e+01 1.04584e+00 2266 2004 11 2.64415e+01 1.00566e+00 2036 2004 12 2.54123e+01 1.11605e+00 1797 2005 1 2.40024e+01 9.71700e-01 2604 2005 2 2.36486e+01 1.04125e+00 2121 2005 3 2.39264e+01 8.18487e-01 2234 2005 4 2.40822e+01 1.01920e+00 2887 2005 5 2.57465e+01 1.72072e+00 2347 2005 6 2.79169e+01 1.17617e+00 1495 2005 7 2.91888e+01 8.35582e-01 2329 2005 8 3.01009e+01 1.40952e+00 2494 2005 9 2.91325e+01 1.12100e+00 2325 2005 10 2.78329e+01 9.78792e-01 1577 2005 11 2.56061e+01 9.48664e-01 2876 2005 12 2.45581e+01 9.24592e-01 2651 2006 1 2.32295e+01 9.50809e-01 1776 2006 2 2.37018e+01 9.18672e-01 2554 2006 3 2.46078e+01 1.03194e+00 3012 2006 4 2.57659e+01 1.02310e+00 2979 2006 5 2.69330e+01 1.06857e+00 2496 2006 6 2.82714e+01 8.60067e-01 2392 2006 7 2.88512e+01 9.31589e-01 1699 2006 8 2.97833e+01 8.93747e-01 2215 2006 9 3.01075e+01 8.96275e-01 2239 2006 10 2.86222e+01 9.06233e-01 2304 2006 11 2.62074e+01 1.19780e+00 1852 2006 12 2.49827e+01 1.04383e+00 1264 2007 1 2.47601e+01 9.66010e-01 2225 2007 2 2.38788e+01 9.08052e-01 1718 2007 3 2.43298e+01 7.89174e-01 1620 2007 4 2.50653e+01 9.92211e-01 2803 2007 5 2.66980e+01 1.01072e+00 2364 2007 6 2.80218e+01 1.11236e+00 1735 2007 7 3.00209e+01 8.66167e-01 2692 2007 8 2.97894e+01 8.36248e-01 2318 2007 9 2.99465e+01 7.26964e-01 1794 2007 10 2.78469e+01 1.10671e+00 1831 2007 11 2.64103e+01 9.87381e-01 2962 2007 12 2.55725e+01 7.43875e-01 2420 2008 1 2.43067e+01 9.82497e-01 2184 2008 2 2.45097e+01 1.11143e+00 2276 2008 3 2.39419e+01 9.27809e-01 1887 2008 4 2.55945e+01 9.94641e-01 2744 2008 5 2.69237e+01 1.15020e+00 3294 2008 6 2.81435e+01 5.81917e-01 2271 2008 7 2.90029e+01 1.17758e+00 2118 2008 8 2.97069e+01 1.00932e+00 2119 2008 9 2.83075e+01 8.26133e-01 2029 2008 10 2.81384e+01 8.21455e-01 1795 2008 11 2.56884e+01 8.24248e-01 2433 2008 12 2.41401e+01 1.09389e+00 2079 2009 1 2.34067e+01 1.10863e+00 2455 2009 2 2.30179e+01 1.04834e+00 2479 2009 3 2.38870e+01 1.00662e+00 2210 2009 4 2.49177e+01 7.26641e-01 3030 2009 5 2.65212e+01 1.06489e+00 3063 2009 6 2.91664e+01 1.33048e+00 1857 2009 7 2.93534e+01 8.35922e-01 2052 2009 8 2.97177e+01 9.01687e-01 2694 2009 9 2.97851e+01 1.09242e+00 1732 2009 10 2.91011e+01 1.04284e+00 3112 2009 11 2.72655e+01 7.97739e-01 1888 2009 12 2.55488e+01 1.01426e+00 1645 2010 1 2.39466e+01 1.08858e+00 1890 2010 2 2.31774e+01 9.77197e-01 1020 2010 3 2.22207e+01 8.42816e-01 2325 2010 4 2.42090e+01 1.14755e+00 2001 2010 5 2.69319e+01 1.28864e+00 3114 2010 6 2.96953e+01 8.29287e-01 2985 2010 7 2.89856e+01 9.93900e-01 1696 2010 8 3.00181e+01 1.07812e+00 2073 2010 9 2.93290e+01 8.56362e-01 2492 2010 10 2.77910e+01 1.09522e+00 2457 2010 11 2.64030e+01 1.09478e+00 2286 2010 12 2.44803e+01 1.27453e+00 2812 2011 1 2.27808e+01 1.35829e+00 1940 2011 2 2.26046e+01 9.27010e-01 2797 2011 3 2.44374e+01 1.05888e+00 2910 2011 4 2.58424e+01 7.73797e-01 3047 2011 5 2.71462e+01 6.37390e-01 3080 2011 6 2.83901e+01 1.17608e+00 2005 2011 7 2.96954e+01 9.47918e-01 2475 2011 8 3.01189e+01 1.09920e+00 1942 2011 9 2.98226e+01 9.37966e-01 2465 2011 10 2.85875e+01 1.27659e+00 1447 2011 11 2.59199e+01 8.24442e-01 2690 2011 12 2.48282e+01 9.39687e-01 2484 2012 1 2.37793e+01 7.89749e-01 1898 2012 2 2.45570e+01 7.73255e-01 1542 2012 3 2.48659e+01 9.67879e-01 2553 2012 4 2.59758e+01 9.23435e-01 2441 2012 5 2.67038e+01 1.03161e+00 1692 2012 6 2.82405e+01 9.00402e-01 1643 2012 7 2.84970e+01 1.05582e+00 2583 2012 8 2.93675e+01 1.09096e+00 2023 2012 9 2.90151e+01 1.29384e+00 1931 2012 10 2.81880e+01 7.62589e-01 2720 2012 11 2.71718e+01 7.97130e-01 2327 2012 12 2.56432e+01 1.04331e+00 2317 2013 1 2.45263e+01 7.12029e-01 2009 2013 2 2.42731e+01 9.76183e-01 2599 2013 3 2.42725e+01 9.90780e-01 2158 2013 4 2.54715e+01 1.50498e+00 2334 2013 5 2.66626e+01 6.88754e-01 2701 2013 6 2.78685e+01 1.05468e+00 1610 2013 7 2.87391e+01 1.22713e+00 1848 2013 8 2.89967e+01 1.02384e+00 1957 2013 9 2.91675e+01 7.12997e-01 1884 2013 10 2.83503e+01 9.24735e-01 2607 2013 11 2.71225e+01 9.75613e-01 1715 2013 12 2.59406e+01 8.58599e-01 1964 2014 1 2.50083e+01 1.03227e+00 2187 2014 2 2.51039e+01 1.04036e+00 2575 2014 3 2.47807e+01 1.02674e+00 2686 2014 4 2.56853e+01 1.11186e+00 2632 2014 5 2.63974e+01 7.54848e-01 2072 2014 6 2.84207e+01 1.27631e+00 1889 2014 7 2.94594e+01 1.07756e+00 2347 2014 8 3.05581e+01 8.52715e-01 3076 2014 9 2.98091e+01 8.45707e-01 1493 2014 10 2.84500e+01 1.20532e+00 2724 2014 11 2.62514e+01 9.13842e-01 2455 2014 12 2.55626e+01 1.08494e+00 2250 2015 1 2.51309e+01 8.55621e-01 1851 2015 2 2.42124e+01 1.06975e+00 2264 2015 3 2.49615e+01 1.09786e+00 2873 2015 4 2.64587e+01 1.20286e+00 3057 2015 5 2.71508e+01 9.86662e-01 2835 2015 6 2.88169e+01 1.15531e+00 1794 2015 7 2.97497e+01 8.72395e-01 2453 2015 8 3.03638e+01 8.20248e-01 2259 2015 9 2.97746e+01 1.33563e+00 1582 2015 10 2.86978e+01 1.06823e+00 2207 2015 11 2.76590e+01 8.82574e-01 2356 2015 12 2.56454e+01 8.95325e-01 1684 2016 1 2.57893e+01 8.93776e-01 926 2016 2 2.51623e+01 1.21704e+00 1826 2016 3 2.48058e+01 1.20208e+00 1169 2016 4 2.62746e+01 9.06809e-01 2076 2016 5 2.73920e+01 1.16833e+00 2904 2016 6 2.88170e+01 7.51814e-01 2617 2016 7 2.95205e+01 8.46053e-01 2857 2016 8 3.00212e+01 1.05249e+00 1834 2016 9 2.97039e+01 1.07895e+00 2521 2016 10 2.88720e+01 8.50904e-01 1448 2016 11 2.71195e+01 9.02225e-01 1593 2016 12 2.61047e+01 5.50261e-01 2118 2017 1 2.52359e+01 8.41241e-01 1944 2017 2 2.45087e+01 6.92376e-01 2440 2017 3 2.49437e+01 1.03132e+00 2251 2017 4 2.58381e+01 6.99014e-01 1969 2017 5 2.68870e+01 1.02495e+00 2968 2017 6 2.86341e+01 9.41018e-01 1271 2017 7 2.95448e+01 9.18726e-01 2703 2017 8 3.02576e+01 7.96146e-01 2515 2017 9 2.97359e+01 8.64043e-01 2677 2017 10 2.83851e+01 1.06344e+00 1816 2017 11 2.66622e+01 7.32193e-01 3030 2017 12 2.58301e+01 1.10256e+00 3550 2018 1 2.42668e+01 1.36382e+00 1169 2018 2 2.45082e+01 1.04954e+00 2593 2018 3 2.53962e+01 1.12119e+00 3390 2018 4 2.57647e+01 7.67336e-01 2785 2018 5 2.53947e+01 1.31319e+00 918 2018 6 2.84080e+01 1.21096e+00 1583 2018 7 3.00532e+01 1.15483e+00 2005 2018 8 3.00160e+01 6.93367e-01 2613 2018 9 2.95854e+01 7.92474e-01 2541 2018 10 2.82225e+01 7.67965e-01 2673 2018 11 2.72300e+01 9.49169e-01 2301 2018 12 2.54792e+01 1.36221e+00 1926 2019 1 2.48353e+01 1.13728e+00 2565 2019 2 2.51674e+01 1.03227e+00 2578 2019 3 2.59255e+01 1.00194e+00 2731 2019 4 2.60082e+01 7.12301e-01 2910 2019 5 2.72990e+01 8.99329e-01 3024 2019 6 2.96957e+01 1.32753e+00 2274 2019 7 2.99495e+01 1.05915e+00 2341 2019 8 3.05621e+01 1.02862e+00 1764 2019 9 2.92534e+01 1.01433e+00 2024 2019 10 2.84459e+01 9.21436e-01 2771 2019 11 2.76697e+01 1.01579e+00 2562 2019 12 2.57761e+01 8.93824e-01 2012 2020 1 2.53721e+01 8.54120e-01 2648 2020 2 2.54486e+01 1.22816e+00 2008 2020 3 2.52451e+01 8.79480e-01 3217 2020 4 2.67814e+01 1.07473e+00 2494 2020 5 2.75606e+01 8.60366e-01 2022 2020 6 2.90303e+01 7.49858e-01 1408 2020 7 3.00133e+01 1.15104e+00 2004 2020 8 3.02634e+01 1.07309e+00 2554 2020 9 2.97858e+01 8.87076e-01 2055 2020 10 2.87435e+01 1.02758e+00 1882 2020 11 2.69833e+01 7.31527e-01 1648 2020 12 2.58196e+01 1.15490e+00 2492 2021 1 2.42420e+01 1.00735e+00 2480 2021 2 2.43483e+01 1.07071e+00 2785 2021 3 2.49977e+01 7.75065e-01 3170 2021 4 2.57110e+01 8.29568e-01 2606 2021 5 2.71810e+01 1.00546e+00 2618 2021 6 2.77704e+01 1.01314e+00 1211 2021 7 2.93469e+01 1.01448e+00 2150 2021 8 3.00882e+01 8.39621e-01 2320 2021 9 2.99512e+01 1.10701e+00 2480 2021 10 2.87843e+01 8.53605e-01 2453 2021 11 2.66512e+01 6.84841e-01 1826 2021 12 2.60964e+01 7.51640e-01 3005 2022 1 2.54394e+01 7.09019e-01 2182 2022 2 2.46290e+01 1.00574e+00 2520 2022 3 2.56084e+01 7.16609e-01 2962 2022 4 2.62254e+01 8.18886e-01 1274 2022 5 2.75953e+01 8.64617e-01 2987 2022 6 2.89760e+01 1.03282e+00 2396 2022 7 2.95848e+01 8.41872e-01 2861 2022 8 3.01097e+01 7.96472e-01 2700 2022 9 3.05561e+01 1.02880e+00 2357 2022 10 2.79092e+01 9.78111e-01 1953 2022 11 2.74384e+01 4.90212e-01 2544 2022 12 2.63586e+01 8.08534e-01 2324 2023 1 2.53383e+01 9.51751e-01 2836 2023 2 2.52697e+01 1.09145e+00 3032 2023 3 2.54488e+01 9.17160e-01 2777 2023 4 2.64827e+01 9.50238e-01 2629 2023 5 2.75138e+01 1.00840e+00 2750 2023 6 2.95118e+01 7.71747e-01 1892 2023 7 3.10261e+01 9.31523e-01 2040 2023 8 3.10132e+01 8.16685e-01 2440 2023 9 3.07307e+01 8.53759e-01 2170 2023 10 2.91203e+01 1.16418e+00 2301 2023 11 2.76387e+01 8.28608e-01 2264 2023 12 2.60130e+01 1.04593e+00 1292 2024 1 2.52117e+01 9.16602e-01 1484 2024 2 2.41170e+01 9.73803e-01 2314 2024 3 2.53021e+01 8.95622e-01 2079 2024 4 2.35804e+01 1.57016e+00 134