YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.62449e+01 4.46102e-01 165 2000 3 1.65085e+01 8.91832e-01 967 2000 4 2.15847e+01 2.52060e+00 63 2000 5 2.65201e+01 1.83670e+00 505 2000 6 2.84265e+01 7.92362e-01 454 2000 7 3.11352e+01 1.55228e+00 479 2000 8 3.30738e+01 1.03668e+00 993 2000 9 3.03053e+01 8.99017e-01 1878 2000 10 2.79652e+01 1.11230e+00 1922 2000 11 2.35952e+01 1.39634e+00 1145 2000 12 1.96580e+01 1.03452e+00 1453 2001 1 1.69639e+01 5.76792e-01 1962 2001 2 1.61010e+01 9.01525e-01 1432 2001 3 1.86971e+01 9.42816e-01 1240 2001 4 2.21611e+01 8.08672e-01 856 2001 5 2.52988e+01 1.65381e+00 917 2001 6 2.80037e+01 8.28251e-01 463 2001 7 3.11450e+01 1.29806e+00 1241 2001 8 3.23130e+01 8.90304e-01 2101 2001 9 3.13933e+01 6.61456e-01 2450 2001 10 2.91881e+01 6.53779e-01 2334 2001 11 2.61924e+01 2.13389e+00 1851 2001 12 1.99635e+01 1.21299e+00 976 2002 1 1.64687e+01 9.01781e-01 1747 2002 2 1.64281e+01 6.85843e-01 1259 2002 3 1.86274e+01 8.50771e-01 713 2002 4 2.13311e+01 2.08524e+00 839 2002 5 2.62373e+01 1.39268e+00 1628 2002 6 2.91211e+01 1.16104e+00 1419 2002 7 3.15676e+01 1.11068e+00 3662 2002 8 3.13620e+01 8.02831e-01 3857 2002 9 3.07106e+01 9.19065e-01 4924 2002 10 2.88696e+01 1.01609e+00 4447 2002 11 2.50651e+01 1.82402e+00 4433 2002 12 1.94277e+01 1.40933e+00 2513 2003 1 1.65054e+01 6.77735e-01 2531 2003 2 1.65137e+01 7.60471e-01 2255 2003 3 1.67829e+01 1.45877e+00 1964 2003 4 2.10855e+01 1.71629e+00 1378 2003 5 2.51716e+01 2.19885e+00 1856 2003 6 2.91606e+01 1.43908e+00 2280 2003 7 3.10990e+01 1.15384e+00 3990 2003 8 3.21287e+01 1.07778e+00 4460 2003 9 3.06626e+01 1.30610e+00 4977 2003 10 2.89517e+01 9.17304e-01 5044 2003 11 2.40647e+01 1.99320e+00 3744 2003 12 1.94660e+01 1.44082e+00 2039 2004 1 1.68265e+01 8.09780e-01 2198 2004 2 1.67212e+01 6.79642e-01 2510 2004 3 1.85942e+01 8.86102e-01 2680 2004 4 2.03054e+01 1.19563e+00 1669 2004 5 2.46767e+01 1.66318e+00 2857 2004 6 2.89453e+01 1.39557e+00 3020 2004 7 3.13215e+01 1.12848e+00 4463 2004 8 3.18109e+01 7.83256e-01 4893 2004 9 3.07414e+01 1.15028e+00 4646 2004 10 2.88039e+01 1.54847e+00 4332 2004 11 2.59682e+01 1.88485e+00 2135 2004 12 1.82732e+01 1.79951e+00 2154 2005 1 1.50796e+01 8.65734e-01 2550 2005 2 1.50051e+01 8.41185e-01 1903 2005 3 1.79035e+01 1.10117e+00 2320 2005 4 2.09597e+01 1.66851e+00 1686 2005 5 2.50292e+01 2.42824e+00 1992 2005 6 2.87527e+01 1.18008e+00 3005 2005 7 3.03168e+01 1.48376e+00 2305 2005 8 3.14869e+01 9.19897e-01 4306 2005 9 3.05335e+01 9.91175e-01 5018 2005 10 2.77840e+01 1.54723e+00 4863 2005 11 2.34244e+01 1.38122e+00 2896 2005 12 2.08591e+01 1.15701e+00 2693 2006 1 1.67625e+01 9.55819e-01 2435 2006 2 1.61003e+01 1.30899e+00 1540 2006 3 1.79110e+01 9.28741e-01 2648 2006 4 2.18246e+01 1.40831e+00 2141 2006 5 2.66020e+01 1.65673e+00 2865 2006 6 2.98385e+01 9.60153e-01 2928 2006 7 3.05356e+01 1.26235e+00 3642 2006 8 3.16731e+01 1.13589e+00 4263 2006 9 3.14697e+01 8.76769e-01 5521 2006 10 2.93519e+01 1.07386e+00 3481 2006 11 2.48982e+01 2.31973e+00 3331 2006 12 1.86508e+01 1.41300e+00 2757 2007 1 1.44981e+01 1.11965e+00 2969 2007 2 1.51284e+01 1.32484e+00 2551 2007 3 1.74766e+01 1.28663e+00 2398 2007 4 1.99059e+01 1.10512e+00 1144 2007 5 2.67632e+01 1.70468e+00 1544 2007 6 2.90571e+01 1.25381e+00 2378 2007 7 3.06811e+01 1.46844e+00 3991 2007 8 3.18966e+01 8.17082e-01 4614 2007 9 3.14406e+01 9.19078e-01 5030 2007 10 2.91141e+01 8.85312e-01 5843 2007 11 2.56457e+01 2.05044e+00 3704 2007 12 1.93109e+01 1.46077e+00 2979 2008 1 1.47177e+01 1.09380e+00 2063 2008 2 1.40529e+01 1.10432e+00 2023 2008 3 1.72360e+01 2.14242e+00 873 2008 4 2.08171e+01 1.56251e+00 1292 2008 5 2.49509e+01 1.94426e+00 1790 2008 6 2.84035e+01 1.31589e+00 1115 2008 7 3.04035e+01 1.51266e+00 2433 2008 8 3.17359e+01 1.17526e+00 3985 2008 9 3.11040e+01 1.44811e+00 3784 2008 10 2.82494e+01 1.39412e+00 4070 2008 11 2.38842e+01 1.20189e+00 2810 2008 12 2.05251e+01 1.57725e+00 3792 2009 1 1.64683e+01 1.06275e+00 3290 2009 2 1.57697e+01 7.90010e-01 970 2009 3 1.70371e+01 1.29091e+00 2113 2009 4 1.95195e+01 1.56655e+00 1431 2009 5 2.49169e+01 2.17418e+00 1530 2009 6 2.86683e+01 2.18662e+00 1984 2009 7 3.04581e+01 1.66562e+00 2301 2009 8 3.07310e+01 1.03346e+00 3743 2009 9 3.03196e+01 1.13511e+00 4804 2009 10 2.81344e+01 9.29445e-01 3179 2009 11 2.52157e+01 1.32815e+00 3386 2009 12 2.03956e+01 1.20569e+00 3072 2010 1 1.86214e+01 8.44850e-01 2643 2010 2 1.69163e+01 1.38241e+00 1973 2010 3 1.90337e+01 1.60021e+00 1895 2010 4 2.14822e+01 1.77424e+00 1522 2010 5 2.54363e+01 1.65747e+00 1752 2010 6 2.89719e+01 1.23682e+00 1872 2010 7 3.09278e+01 1.38547e+00 2526 2010 8 3.27953e+01 1.26538e+00 3534 2010 9 3.20318e+01 1.37922e+00 4684 2010 10 2.93940e+01 1.16830e+00 4965 2010 11 2.53372e+01 1.24543e+00 4422 2010 12 2.12533e+01 1.60737e+00 3108 2011 1 1.72590e+01 8.99931e-01 2678 2011 2 1.57259e+01 9.33809e-01 2170 2011 3 1.78527e+01 1.31196e+00 2994 2011 4 2.00629e+01 1.67435e+00 948 2011 5 2.60890e+01 2.80321e+00 1887 2011 6 2.91640e+01 1.46355e+00 1960 2011 7 3.07024e+01 1.69033e+00 3205 2011 8 3.22048e+01 9.54694e-01 4655 2011 9 3.16853e+01 6.98610e-01 4739 2011 10 2.84500e+01 1.55196e+00 4593 2011 11 2.34479e+01 1.57237e+00 2541 2011 12 1.80544e+01 1.40823e+00 3168 2012 1 1.61018e+01 7.61942e-01 3041 2012 2 1.49310e+01 1.05532e+00 1727 2012 3 1.55358e+01 1.25821e+00 2131 2012 4 1.91525e+01 1.30751e+00 1435 2012 5 2.46851e+01 1.75341e+00 764 2012 6 2.90463e+01 1.60270e+00 2747 2012 7 3.14355e+01 1.50092e+00 3460 2012 8 3.21251e+01 9.99735e-01 4710 2012 9 3.08989e+01 1.12462e+00 4710 2012 10 2.94490e+01 1.26796e+00 4852 2012 11 2.65591e+01 1.70811e+00 3161 2012 12 2.04812e+01 1.33626e+00 2972 2013 1 1.70917e+01 1.54379e+00 2450 2013 2 1.73931e+01 8.41503e-01 2408 2013 3 1.83277e+01 1.42452e+00 1984 2013 4 2.15164e+01 1.61850e+00 2004 2013 5 2.49975e+01 2.29536e+00 3204 2013 6 2.87656e+01 1.32722e+00 2268 2013 7 3.09047e+01 9.41099e-01 3352 2013 8 3.22130e+01 8.66488e-01 5176 2013 9 3.15264e+01 9.44645e-01 5160 2013 10 2.74729e+01 1.59377e+00 4245 2013 11 2.39408e+01 6.47434e-01 3210 2013 12 1.94610e+01 2.12105e+00 3284 2014 1 1.62648e+01 6.74728e-01 2613 2014 2 1.58965e+01 8.15345e-01 2757 2014 3 1.90768e+01 1.29018e+00 2018 2014 4 2.16010e+01 1.99644e+00 1563 2014 5 2.67738e+01 1.67060e+00 2710 2014 6 2.94267e+01 1.18416e+00 3267 2014 7 3.13892e+01 8.81711e-01 4378 2014 8 3.19758e+01 7.96448e-01 4997 2014 9 3.18468e+01 1.05288e+00 5779 2014 10 2.95653e+01 1.53759e+00 5199 2014 11 2.47884e+01 1.73635e+00 3953 2014 12 2.07187e+01 1.23831e+00 3981 2015 1 1.75712e+01 1.19553e+00 3142 2015 2 1.73493e+01 1.09698e+00 1996 2015 3 1.85980e+01 1.14021e+00 2010 2015 4 2.17667e+01 1.62866e+00 1819 2015 5 2.59024e+01 1.78646e+00 1509 2015 6 2.87952e+01 1.10783e+00 2660 2015 7 3.13340e+01 1.59539e+00 3836 2015 8 3.28227e+01 8.13619e-01 5676 2015 9 3.20429e+01 9.43405e-01 5483 2015 10 3.01364e+01 9.09174e-01 4434 2015 11 2.52686e+01 1.44570e+00 3590 2015 12 2.00946e+01 1.90143e+00 2944 2016 1 1.69444e+01 7.34705e-01 3122 2016 2 1.69151e+01 7.16421e-01 3087 2016 3 1.87921e+01 1.28549e+00 2010 2016 4 2.17031e+01 1.76975e+00 3051 2016 5 2.66148e+01 1.59843e+00 3233 2016 6 2.93971e+01 1.37364e+00 3258 2016 7 3.20784e+01 1.22420e+00 4526 2016 8 3.31137e+01 8.64088e-01 4956 2016 9 3.19029e+01 1.24851e+00 4788 2016 10 2.87727e+01 1.04133e+00 4399 2016 11 2.52646e+01 1.80355e+00 2654 2016 12 1.92887e+01 1.50843e+00 2340 2017 1 1.67571e+01 1.26498e+00 2438 2017 2 1.50862e+01 9.00798e-01 2290 2017 3 1.75810e+01 1.46081e+00 1818 2017 4 2.14466e+01 1.48425e+00 1304 2017 5 2.53729e+01 1.90401e+00 2457 2017 6 2.91868e+01 1.78748e+00 2370 2017 7 3.22173e+01 1.22847e+00 4045 2017 8 3.36680e+01 7.66320e-01 5010 2017 9 3.25757e+01 1.05297e+00 4974 2017 10 2.95064e+01 1.44584e+00 5206 2017 11 2.63264e+01 1.75111e+00 3451 2017 12 2.01918e+01 1.56508e+00 3460 2018 1 1.80671e+01 1.08880e+00 4003 2018 2 1.75403e+01 9.35198e-01 2128 2018 3 1.98199e+01 1.36462e+00 2559 2018 4 2.17760e+01 1.89135e+00 1925 2018 5 2.65720e+01 1.69359e+00 2829 2018 6 2.97816e+01 1.08148e+00 2743 2018 7 3.11861e+01 1.13175e+00 3448 2018 8 3.15515e+01 7.79598e-01 5015 2018 9 3.24132e+01 8.59005e-01 5399 2018 10 3.05236e+01 1.39522e+00 5022 2018 11 2.44734e+01 1.40555e+00 1907 2018 12 2.08290e+01 1.04379e+00 3581 2019 1 1.70454e+01 1.76908e+00 1398 2019 2 1.68696e+01 7.53391e-01 2276 2019 3 1.82012e+01 1.02621e+00 3028 2019 4 2.19884e+01 1.13112e+00 2857 2019 5 2.69926e+01 2.84289e+00 3397 2019 6 3.19140e+01 9.25313e-01 5040 2019 7 3.16840e+01 9.37166e-01 4611 2019 8 3.23235e+01 8.66638e-01 6117 2019 9 3.23762e+01 6.17685e-01 6570 2019 10 3.16042e+01 1.21031e+00 5018 2019 11 2.60470e+01 1.81044e+00 4529 2019 12 2.06598e+01 1.17704e+00 4544 2020 1 1.75323e+01 8.87634e-01 4881 2020 2 1.63584e+01 5.81754e-01 4016 2020 3 1.87728e+01 1.11595e+00 3974 2020 4 2.28011e+01 1.08892e+00 2866 2020 5 2.71056e+01 1.87050e+00 4516 2020 6 3.00345e+01 1.11016e+00 6897 2020 7 3.35710e+01 1.37256e+00 5977 2020 8 3.37164e+01 8.64473e-01 4702 2020 9 3.28894e+01 9.06291e-01 6159 2020 10 3.02608e+01 1.48551e+00 7252 2020 11 2.65816e+01 1.55158e+00 3995 2020 12 2.08244e+01 1.24342e+00 4253 2021 1 1.73234e+01 8.64772e-01 5083 2021 2 1.74386e+01 7.08563e-01 4107 2021 3 1.85869e+01 9.95246e-01 3916 2021 4 2.23347e+01 2.16377e+00 2685 2021 5 2.79865e+01 2.40909e+00 4714 2021 6 2.97831e+01 9.62082e-01 5417 2021 7 3.31567e+01 1.17450e+00 6488 2021 8 3.37891e+01 7.36407e-01 6405 2021 9 3.21169e+01 1.16183e+00 6280 2021 10 2.93365e+01 1.07055e+00 6507 2021 11 2.60671e+01 1.71913e+00 5152 2021 12 2.16716e+01 1.59215e+00 2866 2022 1 1.69835e+01 1.17319e+00 3888 2022 2 1.64167e+01 9.16905e-01 4605 2022 3 -7.11107e+01 2.87082e+02 3663 2022 4 2.10798e+01 1.06852e+00 1301 2022 5 2.54298e+01 1.56261e+00 3585 2022 6 3.01625e+01 1.16932e+00 4959 2022 7 3.11746e+01 1.22362e+00 4101 2022 8 3.34736e+01 8.59213e-01 5379 2022 9 3.24737e+01 1.08480e+00 6085 2022 10 3.02501e+01 7.62762e-01 4252 2022 11 2.58668e+01 1.44729e+00 2195 2022 12 2.20001e+01 1.38148e+00 3989 2023 1 1.79436e+01 8.70389e-01 3381 2023 2 1.64441e+01 7.30305e-01 2507 2023 3 1.90266e+01 1.39326e+00 4326 2023 4 2.26855e+01 1.99158e+00 4625 2023 5 2.63868e+01 1.70297e+00 3785 2023 6 3.02557e+01 1.32307e+00 5448 2023 7 3.25919e+01 1.26439e+00 5936 2023 8 3.39505e+01 7.65112e-01 6116 2023 9 3.32595e+01 8.43959e-01 6349 2023 10 3.06908e+01 1.16173e+00 5509 2023 11 2.68809e+01 1.61412e+00 3968 2023 12 2.16307e+01 1.24668e+00 4509 2024 1 1.91900e+01 8.98507e-01 4518 2024 2 1.87058e+01 6.42296e-01 4431 2024 3 1.92336e+01 8.78905e-01 3923 2024 4 2.24581e+01 6.21917e-01 668