YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.91420e+01 5.71771e-02 64 2000 3 2.10938e+01 1.74445e+00 762 2000 4 2.20078e+01 1.18687e+00 797 2000 5 2.59687e+01 1.88471e+00 706 2000 6 2.82138e+01 1.25899e+00 384 2000 7 2.87820e+01 9.38076e-01 329 2000 8 2.89837e+01 1.31134e+00 274 2000 9 2.57177e+01 1.77104e+00 232 2000 10 2.33342e+01 2.18100e+00 796 2000 11 2.12609e+01 2.39873e+00 378 2000 12 1.66198e+01 9.72748e-02 66 2001 1 1.22048e+01 8.60472e-02 30 2001 2 1.84295e+01 2.11138e+00 544 2001 3 1.63362e+01 1.85022e+00 359 2001 4 2.15364e+01 2.18805e+00 593 2001 5 2.56831e+01 1.30205e+00 557 2001 6 2.85679e+01 8.92175e-01 191 2001 7 2.91695e+01 9.40946e-01 256 2001 8 2.97245e+01 1.60233e+00 479 2001 9 2.64339e+01 1.16597e+00 298 2001 10 2.17093e+01 2.15919e+00 337 2001 11 2.02307e+01 9.97969e-01 881 2001 12 1.92568e+01 2.86399e+00 608 2002 1 1.83095e+01 1.58327e+00 338 2002 2 1.71477e+01 2.44736e+00 338 2002 3 2.00270e+01 1.84139e+00 152 2002 4 2.46851e+01 1.98661e+00 480 2002 5 2.57732e+01 1.87751e+00 785 2002 6 2.85340e+01 1.19611e+00 453 2002 7 2.95509e+01 1.37501e+00 1415 2002 8 2.85241e+01 1.53362e+00 1643 2002 9 2.87560e+01 1.16510e+00 1517 2002 10 2.69826e+01 2.15330e+00 2435 2002 11 1.98443e+01 2.53679e+00 1496 2002 12 1.45610e+01 1.36794e+00 460 2003 1 1.19341e+01 1.80726e+00 1238 2003 2 1.56663e+01 1.89997e+00 1088 2003 3 2.10366e+01 2.00923e+00 1252 2003 4 2.13024e+01 2.48350e+00 2535 2003 5 2.73523e+01 1.52471e+00 2208 2003 6 2.87557e+01 1.70853e+00 1301 2003 7 2.85619e+01 2.25069e+00 1070 2003 8 2.85192e+01 1.34428e+00 1659 2003 9 2.74187e+01 1.39173e+00 1409 2003 10 2.42164e+01 1.38262e+00 2379 2003 11 2.15244e+01 2.15181e+00 2474 2003 12 1.44187e+01 1.12643e+00 580 2004 1 1.44496e+01 1.84488e+00 1595 2004 2 1.44194e+01 1.78940e+00 709 2004 3 1.89880e+01 1.82700e+00 2691 2004 4 2.07109e+01 2.23573e+00 2833 2004 5 2.65463e+01 1.80037e+00 3707 2004 6 3.01835e+01 1.49523e+00 1927 2004 7 2.99775e+01 1.76958e+00 1843 2004 8 2.94676e+01 1.61745e+00 1887 2004 9 2.71024e+01 2.02202e+00 1887 2004 10 2.40814e+01 1.97942e+00 2247 2004 11 2.14261e+01 2.56734e+00 2298 2004 12 1.65926e+01 2.05171e+00 1036 2005 1 1.44546e+01 2.44376e+00 1002 2005 2 1.57596e+01 1.67017e+00 1439 2005 3 1.76515e+01 2.10679e+00 1866 2005 4 2.04173e+01 1.37034e+00 2805 2005 5 2.48104e+01 2.14824e+00 2987 2005 6 2.78220e+01 1.64870e+00 1636 2005 7 3.02063e+01 1.73769e+00 2002 2005 8 2.99947e+01 2.09023e+00 2040 2005 9 2.78967e+01 1.38156e+00 2549 2005 10 2.51526e+01 3.16241e+00 2008 2005 11 2.04823e+01 2.11230e+00 2118 2005 12 1.52429e+01 1.90768e+00 1470 2006 1 1.54751e+01 1.91658e+00 1795 2006 2 1.47549e+01 1.51992e+00 1427 2006 3 1.90811e+01 1.70057e+00 2841 2006 4 2.31283e+01 2.36075e+00 2922 2006 5 2.57634e+01 2.07497e+00 3051 2006 6 2.84393e+01 1.49106e+00 3019 2006 7 2.98635e+01 1.49258e+00 2485 2006 8 3.02101e+01 1.33650e+00 2020 2006 9 2.85468e+01 1.61016e+00 2630 2006 10 2.40049e+01 2.53586e+00 2806 2006 11 1.93137e+01 1.95722e+00 1069 2006 12 1.65602e+01 1.81960e+00 1090 2007 1 1.48628e+01 1.83577e+00 1093 2007 2 1.44928e+01 1.68795e+00 1282 2007 3 1.98282e+01 2.10197e+00 2667 2007 4 2.14892e+01 2.23649e+00 2400 2007 5 2.42921e+01 1.52332e+00 2978 2007 6 2.81698e+01 1.55757e+00 2237 2007 7 3.02028e+01 2.02628e+00 1899 2007 8 3.05234e+01 1.37758e+00 2430 2007 9 2.82549e+01 1.53156e+00 1970 2007 10 2.61825e+01 1.32519e+00 1669 2007 11 1.91331e+01 1.91987e+00 2900 2007 12 1.83475e+01 2.04262e+00 1683 2008 1 1.42920e+01 2.09054e+00 576 2008 2 1.73062e+01 1.91724e+00 1722 2008 3 1.82512e+01 2.08730e+00 2326 2008 4 2.24176e+01 1.95783e+00 2644 2008 5 2.51956e+01 1.76837e+00 2751 2008 6 2.90450e+01 1.46728e+00 2043 2008 7 3.02511e+01 1.64389e+00 1416 2008 8 2.80585e+01 2.19898e+00 1427 2008 9 2.73608e+01 2.29082e+00 2348 2008 10 2.31121e+01 2.85911e+00 2945 2008 11 1.72926e+01 2.81455e+00 2169 2008 12 1.59633e+01 1.87811e+00 1721 2009 1 1.49204e+01 2.66319e+00 1614 2009 2 1.46765e+01 2.03747e+00 1484 2009 3 1.82644e+01 3.31411e+00 2427 2009 4 2.15997e+01 2.39055e+00 2257 2009 5 2.58774e+01 1.79865e+00 2291 2009 6 2.91868e+01 1.80726e+00 2348 2009 7 2.92291e+01 1.59139e+00 1865 2009 8 2.97219e+01 1.73184e+00 2017 2009 9 2.87224e+01 1.46013e+00 2306 2009 10 2.63771e+01 2.74923e+00 2532 2009 11 1.95746e+01 1.83667e+00 1436 2009 12 1.42539e+01 2.54530e+00 323 2010 1 1.19471e+01 3.71482e+00 1139 2010 2 1.17230e+01 1.58474e+00 1343 2010 3 1.59602e+01 2.35664e+00 2028 2010 4 2.16396e+01 2.00926e+00 2099 2010 5 2.70810e+01 1.70697e+00 3463 2010 6 3.03715e+01 1.55511e+00 2590 2010 7 3.00791e+01 1.62577e+00 2289 2010 8 3.01606e+01 1.99760e+00 1364 2010 9 2.85691e+01 2.01381e+00 2491 2010 10 2.45782e+01 1.58364e+00 3854 2010 11 1.96558e+01 1.40400e+00 2317 2010 12 1.38109e+01 2.97680e+00 1038 2011 1 1.16384e+01 1.90821e+00 1129 2011 2 1.62886e+01 2.74485e+00 1328 2011 3 1.99742e+01 2.21937e+00 2612 2011 4 2.42736e+01 1.81550e+00 3698 2011 5 2.64734e+01 1.94714e+00 3736 2011 6 2.97896e+01 1.51794e+00 2341 2011 7 2.97145e+01 1.68924e+00 2063 2011 8 3.04240e+01 1.34013e+00 2414 2011 9 2.83441e+01 1.14694e+00 2804 2011 10 2.25761e+01 2.40279e+00 2198 2011 11 1.91483e+01 1.84673e+00 2063 2011 12 1.65999e+01 1.37210e+00 1815 2012 1 1.53807e+01 2.22193e+00 1861 2012 2 1.67291e+01 3.26163e+00 829 2012 3 2.18893e+01 2.51910e+00 3007 2012 4 2.34879e+01 1.82171e+00 3560 2012 5 2.70063e+01 1.17394e+00 2794 2012 6 2.76648e+01 1.64517e+00 1771 2012 7 2.93219e+01 1.79289e+00 2102 2012 8 2.92466e+01 1.65808e+00 1783 2012 9 2.80046e+01 1.62752e+00 1982 2012 10 2.42397e+01 2.84725e+00 2248 2012 11 1.78250e+01 1.68486e+00 2102 2012 12 1.74741e+01 1.80845e+00 1567 2013 1 1.69224e+01 2.29852e+00 1534 2013 2 1.59896e+01 1.96159e+00 1782 2013 3 1.61494e+01 1.95112e+00 2581 2013 4 2.18197e+01 1.94887e+00 2199 2013 5 2.51795e+01 2.27255e+00 2650 2013 6 2.87355e+01 1.95940e+00 2368 2013 7 2.85456e+01 1.84400e+00 1341 2013 8 2.97400e+01 2.00951e+00 2021 2013 9 2.89317e+01 2.09391e+00 2349 2013 10 2.47244e+01 2.52048e+00 2553 2013 11 1.94718e+01 2.83511e+00 1078 2013 12 1.78093e+01 2.31745e+00 1417 2014 1 1.35818e+01 1.60051e+00 868 2014 2 1.57825e+01 2.51604e+00 1105 2014 3 1.79183e+01 1.87543e+00 2307 2014 4 2.13665e+01 2.29549e+00 1981 2014 5 2.44085e+01 1.78981e+00 2092 2014 6 2.83323e+01 1.96715e+00 2015 2014 7 3.01134e+01 1.81158e+00 1761 2014 8 2.96451e+01 1.77479e+00 2506 2014 9 2.82597e+01 1.79294e+00 1350 2014 10 2.48209e+01 2.31452e+00 2962 2014 11 1.73583e+01 1.85455e+00 1398 2014 12 1.67953e+01 1.56562e+00 1639 2015 1 1.44588e+01 1.91836e+00 1681 2015 2 1.37069e+01 1.72679e+00 1647 2015 3 2.00830e+01 2.37636e+00 2024 2015 4 2.34909e+01 1.99575e+00 1202 2015 5 2.68942e+01 2.17199e+00 3428 2015 6 3.00980e+01 1.49579e+00 1857 2015 7 2.91123e+01 1.66941e+00 1772 2015 8 2.99180e+01 1.52417e+00 2340 2015 9 2.71035e+01 1.47277e+00 1147 2015 10 2.42798e+01 1.63691e+00 1992 2015 11 2.29462e+01 3.35699e+00 2117 2015 12 1.94781e+01 2.23520e+00 1215 2016 1 1.41645e+01 1.80771e+00 1220 2016 2 1.48541e+01 2.13287e+00 1622 2016 3 1.93147e+01 2.49556e+00 1298 2016 4 2.24161e+01 2.21636e+00 2156 2016 5 2.62459e+01 1.99842e+00 2621 2016 6 2.96668e+01 1.84449e+00 2827 2016 7 3.12698e+01 1.60767e+00 3197 2016 8 3.02920e+01 1.18742e+00 1917 2016 9 2.92738e+01 1.44805e+00 2338 2016 10 2.45428e+01 1.85282e+00 2454 2016 11 2.03593e+01 2.51898e+00 2361 2016 12 1.86740e+01 1.74797e+00 1732 2017 1 1.58991e+01 2.44068e+00 1576 2017 2 1.83589e+01 2.13894e+00 2201 2017 3 1.96464e+01 2.74192e+00 2563 2017 4 2.34726e+01 2.14149e+00 2661 2017 5 2.54228e+01 2.07609e+00 2609 2017 6 2.90446e+01 2.00628e+00 1589 2017 7 3.01320e+01 2.05270e+00 1412 2017 8 3.01991e+01 1.51043e+00 2135 2017 9 2.79083e+01 1.76596e+00 2455 2017 10 2.47040e+01 2.96731e+00 2591 2017 11 2.01848e+01 1.47711e+00 2824 2017 12 1.73577e+01 3.11066e+00 1696 2018 1 1.18883e+01 1.96924e+00 980 2018 2 2.08057e+01 3.50426e+00 1830 2018 3 1.85549e+01 2.33394e+00 2783 2018 4 2.19939e+01 1.55314e+00 2603 2018 5 2.55364e+01 1.89739e+00 1752 2018 6 2.91593e+01 2.06108e+00 1758 2018 7 2.96169e+01 2.02140e+00 1368 2018 8 3.00770e+01 1.48076e+00 1918 2018 9 2.97926e+01 1.73022e+00 2835 2018 10 2.65571e+01 2.22221e+00 3024 2018 11 1.99328e+01 2.90363e+00 1449 2018 12 1.63689e+01 2.04447e+00 1298 2019 1 1.52670e+01 2.06647e+00 1652 2019 2 1.81441e+01 3.05921e+00 1349 2019 3 1.92763e+01 1.85270e+00 2317 2019 4 2.27602e+01 2.14343e+00 1932 2019 5 2.78521e+01 1.96683e+00 2838 2019 6 2.91133e+01 1.74997e+00 1915 2019 7 2.95849e+01 1.59197e+00 1581 2019 8 3.03141e+01 1.19780e+00 1578 2019 9 2.88088e+01 1.55444e+00 3129 2019 10 2.59367e+01 1.80566e+00 2243 2019 11 1.91664e+01 2.26741e+00 2161 2019 12 1.71878e+01 1.90294e+00 1775 2020 1 1.66876e+01 2.60705e+00 2582 2020 2 1.64745e+01 2.06896e+00 1696 2020 3 2.26248e+01 3.65283e+00 2555 2020 4 2.41099e+01 9.63581e-01 1772 2020 5 2.49322e+01 1.86182e+00 3034 2020 6 2.94562e+01 1.94683e+00 2038 2020 7 2.99701e+01 1.33173e+00 1715 2020 8 3.13434e+01 1.49613e+00 1428 2020 9 2.83060e+01 2.06312e+00 1382 2020 10 2.57607e+01 1.41474e+00 2021 2020 11 2.10421e+01 2.13350e+00 2355 2020 12 1.50850e+01 1.61449e+00 2476 2021 1 1.53533e+01 2.31528e+00 1552 2021 2 1.69041e+01 2.73587e+00 2175 2021 3 1.96066e+01 2.37845e+00 2341 2021 4 2.25873e+01 2.36004e+00 2534 2021 5 2.55187e+01 1.93417e+00 2811 2021 6 2.83919e+01 1.55583e+00 1384 2021 7 2.91990e+01 1.50298e+00 1899 2021 8 3.00183e+01 1.72974e+00 1339 2021 9 2.80628e+01 1.67923e+00 1855 2021 10 2.59033e+01 2.24097e+00 2163 2021 11 1.82942e+01 1.75376e+00 2539 2021 12 1.88330e+01 1.77003e+00 2880 2022 1 1.51134e+01 2.76496e+00 2568 2022 2 1.69177e+01 3.16805e+00 2509 2022 3 2.02581e+01 1.67866e+00 2681 2022 4 2.31916e+01 1.75054e+00 1820 2022 5 2.67840e+01 1.66919e+00 2914 2022 6 2.94407e+01 1.28200e+00 2389 2022 7 3.06954e+01 1.41403e+00 2038 2022 8 3.06732e+01 1.55330e+00 2090 2022 9 2.81974e+01 2.40200e+00 1767 2022 10 2.31103e+01 2.28534e+00 3287 2022 11 2.20191e+01 2.41977e+00 1492 2022 12 1.82212e+01 3.25985e+00 2923 2023 1 1.55446e+01 1.78771e+00 2613 2023 2 1.76677e+01 1.93703e+00 2282 2023 3 2.10638e+01 2.52584e+00 2710 2023 4 2.37542e+01 1.75771e+00 1952 2023 5 2.58835e+01 2.31745e+00 2666 2023 6 2.81012e+01 1.62901e+00 2106 2023 7 3.09714e+01 1.64811e+00 2303 2023 8 3.10984e+01 1.34863e+00 2467 2023 9 2.91813e+01 1.68190e+00 2482 2023 10 2.34655e+01 1.78447e+00 2379 2023 11 2.06953e+01 2.19192e+00 1784 2023 12 1.51492e+01 1.97173e+00 1233 2024 1 1.45733e+01 1.71321e+00 1442 2024 2 1.65673e+01 1.31034e+00 2058 2024 3 2.07966e+01 1.86142e+00 1825 2024 4 2.22803e+01 7.87373e-01 256