YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.66870e+01 2.01959e-01 128 2000 3 1.93782e+01 2.07884e+00 614 2000 4 2.13428e+01 1.75732e+00 563 2000 5 2.56383e+01 2.12148e+00 864 2000 6 2.77193e+01 6.55513e-01 330 2000 7 2.92366e+01 7.68881e-01 556 2000 8 2.98705e+01 3.53917e-01 250 2000 9 2.69786e+01 6.72363e-01 211 2000 10 2.31250e+01 7.53217e-01 936 2000 11 2.09097e+01 2.39042e+00 538 2000 12 1.49189e+01 1.57920e+00 299 2001 1 1.24399e+01 1.82444e-01 128 2001 2 1.71427e+01 9.24902e-01 258 2001 3 1.64942e+01 1.25992e+00 485 2001 4 2.01162e+01 1.84298e+00 720 2001 5 2.45454e+01 1.67930e+00 828 2001 6 2.74356e+01 8.62874e-01 194 2001 7 2.94316e+01 7.19166e-01 192 2001 8 2.89794e+01 1.30836e+00 617 2001 9 2.68472e+01 1.55646e+00 479 2001 10 2.29564e+01 1.81894e+00 512 2001 11 2.00858e+01 4.93675e-01 640 2001 12 1.90638e+01 2.37986e+00 666 2002 1 1.35152e+01 1.08435e-01 128 2002 2 1.44970e+01 1.54780e+00 447 2002 3 1.67346e+01 8.59110e-02 64 2002 4 2.33971e+01 2.15072e+00 687 2002 5 2.61068e+01 1.30478e+00 726 2002 6 2.81463e+01 7.75690e-01 384 2002 7 2.93457e+01 1.12755e+00 1859 2002 8 2.90909e+01 9.72308e-01 2074 2002 9 2.85887e+01 8.20478e-01 2231 2002 10 2.70418e+01 1.59543e+00 2698 2002 11 2.13803e+01 2.54611e+00 2355 2002 12 1.51949e+01 9.45814e-01 1327 2003 1 1.30684e+01 1.04491e+00 2093 2003 2 1.42089e+01 1.35178e+00 1019 2003 3 2.05734e+01 1.39007e+00 1155 2003 4 2.13302e+01 1.81429e+00 3026 2003 5 2.64816e+01 1.26337e+00 2800 2003 6 2.83938e+01 1.40724e+00 2253 2003 7 2.95241e+01 1.30942e+00 1525 2003 8 2.91608e+01 1.05008e+00 1845 2003 9 2.82716e+01 1.04959e+00 2039 2003 10 2.43088e+01 8.92372e-01 2571 2003 11 2.20295e+01 1.48960e+00 2990 2003 12 1.55245e+01 1.79344e+00 1449 2004 1 1.37000e+01 1.05010e+00 1416 2004 2 1.37536e+01 9.57116e-01 563 2004 3 1.80625e+01 1.37335e+00 2784 2004 4 2.03719e+01 1.33910e+00 2760 2004 5 2.57758e+01 1.77246e+00 3492 2004 6 2.93546e+01 1.20567e+00 2451 2004 7 3.00019e+01 1.52591e+00 2249 2004 8 2.96746e+01 1.14248e+00 2284 2004 9 2.73340e+01 1.68315e+00 2448 2004 10 2.51380e+01 1.52134e+00 2906 2004 11 2.21745e+01 2.42460e+00 2073 2004 12 1.59046e+01 2.14781e+00 1920 2005 1 1.42452e+01 1.89259e+00 1374 2005 2 1.41963e+01 7.28460e-01 882 2005 3 1.60698e+01 1.65777e+00 1634 2005 4 2.02233e+01 9.52844e-01 2700 2005 5 2.46301e+01 2.16807e+00 3141 2005 6 2.82544e+01 1.24563e+00 2495 2005 7 3.00442e+01 1.73154e+00 2413 2005 8 2.97918e+01 1.69451e+00 2257 2005 9 2.80808e+01 1.03808e+00 3190 2005 10 2.52321e+01 2.15624e+00 3336 2005 11 2.03412e+01 1.56609e+00 2364 2005 12 1.50564e+01 1.87075e+00 1558 2006 1 1.48766e+01 1.02357e+00 1374 2006 2 1.50380e+01 1.29471e+00 1662 2006 3 1.81789e+01 1.04121e+00 2646 2006 4 2.20946e+01 2.16377e+00 3002 2006 5 2.49325e+01 1.44171e+00 3596 2006 6 2.80410e+01 1.21924e+00 3105 2006 7 2.99725e+01 1.28405e+00 2577 2006 8 3.04895e+01 1.09829e+00 2956 2006 9 2.85921e+01 1.35252e+00 2676 2006 10 2.51197e+01 1.99780e+00 3153 2006 11 1.87757e+01 1.80862e+00 2428 2006 12 1.62894e+01 1.33635e+00 1042 2007 1 1.50193e+01 9.25906e-01 840 2007 2 1.36826e+01 8.69515e-01 1257 2007 3 1.79251e+01 1.48699e+00 2675 2007 4 2.07558e+01 1.23241e+00 2069 2007 5 2.42337e+01 9.12304e-01 3701 2007 6 2.76666e+01 1.75675e+00 2558 2007 7 2.99611e+01 1.54871e+00 1991 2007 8 3.03366e+01 1.49617e+00 2886 2007 9 2.87686e+01 1.48185e+00 2499 2007 10 2.61693e+01 1.29799e+00 2185 2007 11 2.01021e+01 1.54665e+00 2983 2007 12 1.79569e+01 1.22334e+00 1524 2008 1 1.43971e+01 1.54987e+00 995 2008 2 1.58196e+01 1.19549e+00 1587 2008 3 1.75955e+01 1.24209e+00 2310 2008 4 2.12972e+01 1.51902e+00 3226 2008 5 2.48716e+01 1.79411e+00 2822 2008 6 2.87371e+01 1.16868e+00 2401 2008 7 2.92683e+01 1.46618e+00 2027 2008 8 2.85031e+01 1.14687e+00 1700 2008 9 2.76501e+01 1.53212e+00 2692 2008 10 2.41970e+01 1.70578e+00 3732 2008 11 1.83466e+01 1.63198e+00 2454 2008 12 1.55639e+01 1.08842e+00 1425 2009 1 1.47358e+01 1.52541e+00 1878 2009 2 1.40595e+01 1.01909e+00 1726 2009 3 1.77743e+01 2.04492e+00 2294 2009 4 2.14522e+01 1.61128e+00 2710 2009 5 2.53372e+01 1.60775e+00 2601 2009 6 2.80602e+01 9.99098e-01 2677 2009 7 2.89495e+01 1.23219e+00 2149 2009 8 2.98285e+01 1.23348e+00 2274 2009 9 2.83807e+01 8.79308e-01 2548 2009 10 2.61189e+01 2.21942e+00 2946 2009 11 1.99828e+01 1.44189e+00 1719 2009 12 1.51067e+01 1.56576e+00 530 2010 1 1.20488e+01 1.83609e+00 1516 2010 2 1.26745e+01 8.26175e-01 1599 2010 3 1.51798e+01 1.64431e+00 1729 2010 4 2.11129e+01 1.58990e+00 2622 2010 5 2.66905e+01 2.17890e+00 3392 2010 6 3.01577e+01 1.39216e+00 2967 2010 7 2.99439e+01 1.36201e+00 2363 2010 8 3.00466e+01 1.39023e+00 1583 2010 9 2.91750e+01 1.07657e+00 2915 2010 10 2.48450e+01 1.17031e+00 4331 2010 11 2.04919e+01 1.29347e+00 3077 2010 12 1.49671e+01 3.03145e+00 2373 2011 1 1.14431e+01 8.38758e-01 1585 2011 2 1.29450e+01 1.82382e+00 923 2011 3 1.87961e+01 1.50979e+00 2518 2011 4 2.33273e+01 1.66445e+00 3478 2011 5 2.56375e+01 1.44836e+00 3702 2011 6 2.94344e+01 1.29046e+00 2719 2011 7 2.97751e+01 1.08085e+00 2206 2011 8 3.08563e+01 9.14199e-01 2712 2011 9 2.84427e+01 9.47731e-01 2769 2011 10 2.43345e+01 1.68969e+00 2883 2011 11 1.92672e+01 1.03844e+00 2073 2011 12 1.67321e+01 9.40888e-01 1328 2012 1 1.53403e+01 1.15958e+00 2265 2012 2 1.58775e+01 1.42763e+00 751 2012 3 2.08101e+01 2.18887e+00 2734 2012 4 2.32687e+01 7.96933e-01 3497 2012 5 2.62220e+01 1.23933e+00 3301 2012 6 2.72028e+01 1.16314e+00 2353 2012 7 2.93805e+01 1.60853e+00 2222 2012 8 2.90149e+01 1.37802e+00 1731 2012 9 2.85836e+01 1.08567e+00 2452 2012 10 2.48513e+01 2.02845e+00 2961 2012 11 1.89161e+01 1.36629e+00 2591 2012 12 1.70933e+01 1.88305e+00 1694 2013 1 1.51887e+01 1.17211e+00 1112 2013 2 1.61598e+01 1.11891e+00 1651 2013 3 1.62527e+01 1.19203e+00 2486 2013 4 2.06151e+01 1.76678e+00 2306 2013 5 2.43495e+01 1.94084e+00 2842 2013 6 2.79516e+01 1.73282e+00 2355 2013 7 2.87668e+01 1.65829e+00 1460 2013 8 3.01601e+01 1.50102e+00 2679 2013 9 2.95954e+01 1.53332e+00 2920 2013 10 2.54726e+01 1.50209e+00 2852 2013 11 2.07301e+01 2.34737e+00 1751 2013 12 1.72767e+01 1.34106e+00 1516 2014 1 1.30713e+01 8.93487e-01 1099 2014 2 1.48354e+01 1.78715e+00 1045 2014 3 1.67287e+01 1.21021e+00 1920 2014 4 2.09356e+01 1.59951e+00 2267 2014 5 2.51126e+01 1.51162e+00 2434 2014 6 2.87599e+01 1.44949e+00 2476 2014 7 2.98573e+01 1.02975e+00 2194 2014 8 3.00492e+01 1.04341e+00 2928 2014 9 2.90077e+01 1.11735e+00 1393 2014 10 2.53454e+01 1.48719e+00 3548 2014 11 1.85868e+01 2.10958e+00 2407 2014 12 1.59443e+01 1.18991e+00 1660 2015 1 1.44655e+01 1.02160e+00 1723 2015 2 1.36955e+01 1.01503e+00 1792 2015 3 1.89225e+01 1.81378e+00 1720 2015 4 2.29384e+01 2.15816e+00 1232 2015 5 2.66777e+01 1.71830e+00 3751 2015 6 2.98561e+01 9.29604e-01 2618 2015 7 2.98523e+01 1.53510e+00 1715 2015 8 3.02363e+01 1.78924e+00 1932 2015 9 2.80431e+01 1.73144e+00 1207 2015 10 2.42736e+01 1.03402e+00 2472 2015 11 2.24664e+01 2.44609e+00 1936 2015 12 1.86057e+01 9.44400e-01 1256 2016 1 1.54477e+01 1.83588e+00 1593 2016 2 1.44080e+01 1.20150e+00 1690 2016 3 1.84848e+01 1.67186e+00 1615 2016 4 2.19704e+01 1.67200e+00 2178 2016 5 2.56189e+01 1.27640e+00 3091 2016 6 2.91694e+01 1.14880e+00 2786 2016 7 3.11465e+01 1.08587e+00 3075 2016 8 3.02246e+01 1.34942e+00 2286 2016 9 2.94092e+01 1.03823e+00 2658 2016 10 2.59946e+01 1.69525e+00 3045 2016 11 2.16045e+01 1.95489e+00 2823 2016 12 1.80635e+01 1.35232e+00 1795 2017 1 1.64730e+01 1.30323e+00 1511 2017 2 1.76619e+01 1.66706e+00 2108 2017 3 1.85795e+01 1.55930e+00 2748 2017 4 2.28266e+01 1.12807e+00 2772 2017 5 2.50851e+01 1.26481e+00 2331 2017 6 2.85448e+01 1.47585e+00 1870 2017 7 3.04388e+01 1.36867e+00 1993 2017 8 3.02457e+01 1.33120e+00 2504 2017 9 2.80452e+01 1.48366e+00 2410 2017 10 2.55838e+01 1.72650e+00 3621 2017 11 2.08335e+01 1.15746e+00 2858 2017 12 1.73160e+01 2.09088e+00 1708 2018 1 1.17254e+01 8.06908e-01 1368 2018 2 1.85120e+01 2.83247e+00 1108 2018 3 1.84782e+01 1.25809e+00 2689 2018 4 2.11256e+01 1.31544e+00 2399 2018 5 2.49292e+01 1.75969e+00 2422 2018 6 2.89053e+01 1.48381e+00 1964 2018 7 3.01433e+01 1.09365e+00 2075 2018 8 3.01089e+01 1.41554e+00 1975 2018 9 3.04382e+01 1.11967e+00 3306 2018 10 2.72032e+01 2.13164e+00 3041 2018 11 2.00245e+01 2.11683e+00 1122 2018 12 1.59711e+01 1.64951e+00 1123 2019 1 1.55327e+01 1.56588e+00 1778 2019 2 1.72132e+01 2.15787e+00 780 2019 3 1.84485e+01 1.14151e+00 1955 2019 4 2.17969e+01 1.94226e+00 2301 2019 5 2.70669e+01 1.96837e+00 3591 2019 6 2.92429e+01 1.03055e+00 1954 2019 7 2.96753e+01 1.41175e+00 2038 2019 8 3.03135e+01 1.01215e+00 2359 2019 9 2.93740e+01 9.47798e-01 3941 2019 10 2.69373e+01 1.87717e+00 2591 2019 11 1.94401e+01 2.52986e+00 2122 2019 12 1.67057e+01 1.03160e+00 1616 2020 1 1.60348e+01 1.00532e+00 2032 2020 2 1.54893e+01 9.02643e-01 1593 2020 3 2.05322e+01 3.36575e+00 2599 2020 4 2.33960e+01 1.02886e+00 2057 2020 5 2.46600e+01 1.18670e+00 2821 2020 6 2.91853e+01 9.77972e-01 2565 2020 7 2.97535e+01 1.13175e+00 2330 2020 8 3.10586e+01 1.01244e+00 1635 2020 9 2.87654e+01 2.07465e+00 1507 2020 10 2.54946e+01 9.21272e-01 2470 2020 11 2.23397e+01 1.47507e+00 3036 2020 12 1.60490e+01 1.78202e+00 2919 2021 1 1.39722e+01 1.24942e+00 1919 2021 2 1.58213e+01 1.68482e+00 1733 2021 3 1.83180e+01 1.18174e+00 2262 2021 4 2.13815e+01 1.08886e+00 2530 2021 5 2.55285e+01 1.35503e+00 2561 2021 6 2.77452e+01 1.21315e+00 1868 2021 7 2.94931e+01 1.16401e+00 1473 2021 8 3.03362e+01 1.29547e+00 1575 2021 9 2.86324e+01 1.26249e+00 2002 2021 10 2.63635e+01 1.53393e+00 2319 2021 11 1.96804e+01 1.36025e+00 2822 2021 12 1.81525e+01 8.35846e-01 2235 2022 1 1.61666e+01 2.12710e+00 2516 2022 2 1.49554e+01 1.89235e+00 2118 2022 3 1.89908e+01 1.09300e+00 2828 2022 4 2.26375e+01 1.32338e+00 1950 2022 5 2.64670e+01 1.49754e+00 2860 2022 6 2.96669e+01 1.23520e+00 2570 2022 7 3.02539e+01 1.23737e+00 1914 2022 8 3.08648e+01 1.20062e+00 2119 2022 9 2.85223e+01 1.70888e+00 2212 2022 10 2.37470e+01 1.36699e+00 3599 2022 11 2.13598e+01 2.11828e+00 1474 2022 12 1.74261e+01 2.32992e+00 3231 2023 1 1.48126e+01 8.07896e-01 2540 2023 2 1.68034e+01 1.30104e+00 2091 2023 3 2.03135e+01 1.43583e+00 2769 2023 4 2.26949e+01 8.01095e-01 1880 2023 5 2.51977e+01 1.57376e+00 2355 2023 6 2.73229e+01 1.48069e+00 2494 2023 7 3.01850e+01 1.04994e+00 2281 2023 8 3.13532e+01 9.68032e-01 2648 2023 9 2.97019e+01 1.21593e+00 2594 2023 10 2.41738e+01 1.45253e+00 2919 2023 11 2.07071e+01 1.53510e+00 2177 2023 12 1.52021e+01 1.57613e+00 1275 2024 1 1.37104e+01 8.51315e-01 1238 2024 2 1.49245e+01 8.74674e-01 1890 2024 3 1.96586e+01 1.03306e+00 1708 2024 4 2.10551e+01 3.50453e-01 75