YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.67075e+01 4.92703e-01 99 2000 3 1.65831e+01 8.00165e-01 1129 2000 4 2.08416e+01 2.46098e+00 180 2000 5 2.46819e+01 1.05207e+00 217 2000 6 2.78446e+01 1.01738e+00 292 2000 7 3.19362e+01 1.65921e+00 811 2000 8 3.35373e+01 1.22264e+00 967 2000 9 3.01489e+01 1.09515e+00 1662 2000 10 2.86355e+01 7.74916e-01 1893 2000 11 2.44314e+01 1.18296e+00 1404 2000 12 2.06145e+01 1.01803e+00 1120 2001 1 1.86993e+01 6.99124e-01 1938 2001 2 1.71014e+01 6.92347e-01 1681 2001 3 1.88643e+01 1.06182e+00 1392 2001 4 2.21862e+01 8.50749e-01 1105 2001 5 2.49359e+01 1.55973e+00 759 2001 6 2.75125e+01 6.79953e-01 303 2001 7 3.11882e+01 1.29766e+00 1296 2001 8 3.30239e+01 1.00786e+00 2166 2001 9 3.16808e+01 8.76347e-01 2422 2001 10 2.99411e+01 5.55234e-01 2551 2001 11 2.62303e+01 2.40867e+00 1876 2001 12 2.13867e+01 9.06600e-01 1272 2002 1 1.87727e+01 9.84320e-01 1913 2002 2 1.75584e+01 5.82207e-01 1286 2002 3 1.91044e+01 1.24090e+00 965 2002 4 2.12847e+01 1.11423e+00 910 2002 5 2.60445e+01 1.03504e+00 1501 2002 6 2.89425e+01 1.23055e+00 1113 2002 7 3.13639e+01 8.26845e-01 2987 2002 8 3.11819e+01 1.01083e+00 4290 2002 9 3.08729e+01 8.20532e-01 4833 2002 10 3.02274e+01 8.72385e-01 5159 2002 11 2.64279e+01 1.65840e+00 3806 2002 12 2.09003e+01 1.70607e+00 3050 2003 1 1.85072e+01 5.86559e-01 2672 2003 2 1.75992e+01 7.54543e-01 2221 2003 3 1.74882e+01 1.23507e+00 2350 2003 4 2.14238e+01 1.71674e+00 1546 2003 5 2.53064e+01 1.33183e+00 2278 2003 6 2.78160e+01 1.56885e+00 1387 2003 7 2.98153e+01 1.27132e+00 2747 2003 8 3.24494e+01 9.91581e-01 4485 2003 9 3.06143e+01 9.68131e-01 4615 2003 10 2.94302e+01 7.13855e-01 5114 2003 11 2.55738e+01 1.95493e+00 3745 2003 12 2.09688e+01 1.14719e+00 1884 2004 1 1.89903e+01 6.43372e-01 2415 2004 2 1.77812e+01 1.10845e+00 2545 2004 3 1.88621e+01 1.05073e+00 2399 2004 4 2.07761e+01 1.16992e+00 2006 2004 5 2.45900e+01 1.18616e+00 2001 2004 6 2.83842e+01 1.20444e+00 2005 2004 7 3.15960e+01 1.33910e+00 3918 2004 8 3.13733e+01 7.41598e-01 3892 2004 9 3.06539e+01 1.06083e+00 4117 2004 10 2.95272e+01 1.03366e+00 4308 2004 11 2.68578e+01 1.98122e+00 2498 2004 12 2.00708e+01 1.32986e+00 2224 2005 1 1.72850e+01 1.10330e+00 2705 2005 2 1.67451e+01 8.11155e-01 1929 2005 3 1.84779e+01 8.06786e-01 2605 2005 4 2.13736e+01 2.12995e+00 2107 2005 5 2.58226e+01 2.04959e+00 2560 2005 6 2.78681e+01 1.01227e+00 1741 2005 7 3.09722e+01 1.63342e+00 2026 2005 8 3.14359e+01 1.06574e+00 3913 2005 9 3.06224e+01 1.03977e+00 4288 2005 10 2.82844e+01 1.09744e+00 4943 2005 11 2.45700e+01 1.21817e+00 2701 2005 12 2.22750e+01 1.12210e+00 3340 2006 1 1.83803e+01 1.09107e+00 2344 2006 2 1.69612e+01 7.70148e-01 2124 2006 3 1.82694e+01 1.11179e+00 2704 2006 4 2.18792e+01 1.00276e+00 2044 2006 5 2.60448e+01 9.95409e-01 2503 2006 6 2.97992e+01 8.24507e-01 3521 2006 7 3.02744e+01 1.11285e+00 2499 2006 8 3.21129e+01 1.39453e+00 3633 2006 9 3.21311e+01 9.85609e-01 5024 2006 10 2.96826e+01 8.74544e-01 3462 2006 11 2.58416e+01 2.23445e+00 3887 2006 12 1.95714e+01 1.55947e+00 2410 2007 1 1.59886e+01 9.01326e-01 2609 2007 2 1.66842e+01 1.03326e+00 2542 2007 3 1.77829e+01 1.28858e+00 2199 2007 4 2.04847e+01 1.11990e+00 916 2007 5 2.58729e+01 2.01123e+00 1679 2007 6 2.93378e+01 8.12996e-01 2588 2007 7 3.01385e+01 1.11439e+00 3401 2007 8 3.23845e+01 9.48034e-01 4928 2007 9 3.23333e+01 1.11086e+00 4606 2007 10 3.00226e+01 7.29609e-01 5829 2007 11 2.62348e+01 1.86365e+00 3874 2007 12 2.06823e+01 1.19992e+00 2501 2008 1 1.65239e+01 1.15218e+00 1413 2008 2 1.50128e+01 9.61264e-01 2681 2008 3 1.73888e+01 2.04212e+00 1265 2008 4 2.16924e+01 1.61529e+00 1650 2008 5 2.55207e+01 1.39328e+00 1929 2008 6 2.79913e+01 1.15461e+00 769 2008 7 3.05518e+01 1.54014e+00 2089 2008 8 3.18246e+01 1.48111e+00 3728 2008 9 3.14535e+01 1.55976e+00 3684 2008 10 2.86608e+01 1.04454e+00 4127 2008 11 2.43401e+01 1.20812e+00 2695 2008 12 2.10149e+01 1.44266e+00 3783 2009 1 1.73343e+01 7.40718e-01 2995 2009 2 1.67890e+01 1.20011e+00 1471 2009 3 1.77700e+01 1.23220e+00 1773 2009 4 2.02695e+01 1.63943e+00 2044 2009 5 2.64490e+01 2.74845e+00 1785 2009 6 2.84929e+01 1.86775e+00 2066 2009 7 2.88696e+01 1.18241e+00 1064 2009 8 3.04497e+01 1.37492e+00 3128 2009 9 3.01357e+01 8.42054e-01 4077 2009 10 2.81917e+01 9.05312e-01 3182 2009 11 2.63979e+01 1.53574e+00 3608 2009 12 2.10662e+01 1.18942e+00 3245 2010 1 1.91708e+01 9.34927e-01 2361 2010 2 1.76507e+01 9.74483e-01 1919 2010 3 2.01281e+01 1.48777e+00 2135 2010 4 2.16672e+01 1.60176e+00 1740 2010 5 2.58138e+01 1.34689e+00 1836 2010 6 2.86479e+01 1.04624e+00 1802 2010 7 3.05742e+01 1.42998e+00 1883 2010 8 3.32109e+01 1.22920e+00 4297 2010 9 3.25062e+01 1.46690e+00 4716 2010 10 3.00731e+01 1.04932e+00 5032 2010 11 2.67738e+01 1.04059e+00 4583 2010 12 2.23123e+01 1.77328e+00 3400 2011 1 1.81800e+01 9.78345e-01 2894 2011 2 1.66888e+01 9.19412e-01 1806 2011 3 1.83744e+01 1.18341e+00 2746 2011 4 2.12277e+01 1.23397e+00 1192 2011 5 2.48836e+01 2.37731e+00 1361 2011 6 2.82037e+01 1.20843e+00 941 2011 7 3.09878e+01 1.84266e+00 2538 2011 8 3.22290e+01 1.10387e+00 4470 2011 9 3.13013e+01 8.44108e-01 4961 2011 10 2.85462e+01 1.35347e+00 4751 2011 11 2.43228e+01 1.54854e+00 2325 2011 12 1.95567e+01 1.38927e+00 3227 2012 1 1.71227e+01 1.28003e+00 2427 2012 2 1.58968e+01 6.67882e-01 1984 2012 3 1.55911e+01 1.29224e+00 1983 2012 4 2.10958e+01 2.06800e+00 1799 2012 5 2.50560e+01 1.80659e+00 1382 2012 6 2.88240e+01 1.27428e+00 2158 2012 7 3.21732e+01 2.05577e+00 3237 2012 8 3.23486e+01 1.10800e+00 4750 2012 9 3.12542e+01 8.81160e-01 5211 2012 10 3.04255e+01 1.05634e+00 4383 2012 11 2.73208e+01 1.69371e+00 2958 2012 12 2.15199e+01 1.17090e+00 2940 2013 1 1.85453e+01 1.04176e+00 2430 2013 2 1.78715e+01 8.70096e-01 3046 2013 3 1.87391e+01 1.09049e+00 2184 2013 4 2.19524e+01 1.55038e+00 2111 2013 5 2.49724e+01 2.05163e+00 3534 2013 6 2.79525e+01 1.14429e+00 1001 2013 7 3.08290e+01 7.77695e-01 2861 2013 8 3.21126e+01 8.75613e-01 5113 2013 9 3.16907e+01 9.53735e-01 5439 2013 10 2.79568e+01 1.38522e+00 4290 2013 11 2.46550e+01 8.14884e-01 3697 2013 12 2.09075e+01 1.68501e+00 2948 2014 1 1.78062e+01 5.51324e-01 2626 2014 2 1.74276e+01 6.71111e-01 3060 2014 3 1.92609e+01 1.20984e+00 2500 2014 4 2.18797e+01 1.62989e+00 2013 2014 5 2.68108e+01 1.42509e+00 3303 2014 6 2.88218e+01 1.14891e+00 2620 2014 7 3.09129e+01 9.52901e-01 3912 2014 8 3.18614e+01 1.44972e+00 4227 2014 9 3.17902e+01 1.05509e+00 5441 2014 10 3.01300e+01 1.19226e+00 5269 2014 11 2.54648e+01 1.36488e+00 3367 2014 12 2.16551e+01 9.48982e-01 3719 2015 1 1.87755e+01 1.16678e+00 2864 2015 2 1.80940e+01 1.22357e+00 1961 2015 3 1.94088e+01 7.24763e-01 2299 2015 4 2.14022e+01 8.41505e-01 1556 2015 5 2.56288e+01 1.69730e+00 2076 2015 6 2.87327e+01 8.82313e-01 2574 2015 7 3.18494e+01 2.06060e+00 2696 2015 8 3.35988e+01 9.21293e-01 5616 2015 9 3.26407e+01 1.20213e+00 5029 2015 10 3.10316e+01 1.11646e+00 4417 2015 11 2.62906e+01 1.43833e+00 4100 2015 12 2.12114e+01 1.58151e+00 3191 2016 1 1.79519e+01 8.33911e-01 3575 2016 2 1.68864e+01 8.86964e-01 2900 2016 3 1.96968e+01 1.09890e+00 2298 2016 4 2.23057e+01 1.87261e+00 3232 2016 5 2.64805e+01 1.45485e+00 2891 2016 6 2.81334e+01 1.48109e+00 2102 2016 7 3.15357e+01 1.22988e+00 3268 2016 8 3.36727e+01 7.12361e-01 4926 2016 9 3.21322e+01 1.24877e+00 4895 2016 10 2.90431e+01 1.13997e+00 4699 2016 11 2.65424e+01 1.16405e+00 2867 2016 12 2.14672e+01 1.56728e+00 2194 2017 1 1.85291e+01 1.50042e+00 2507 2017 2 1.61807e+01 1.26165e+00 1851 2017 3 1.85041e+01 1.58103e+00 1997 2017 4 2.15450e+01 1.39866e+00 1062 2017 5 2.65970e+01 1.79432e+00 2655 2017 6 2.76539e+01 1.16003e+00 820 2017 7 3.21607e+01 1.54490e+00 3797 2017 8 3.44639e+01 7.40247e-01 4085 2017 9 3.34434e+01 9.93007e-01 4816 2017 10 3.01309e+01 1.62501e+00 4818 2017 11 2.64937e+01 1.50458e+00 3172 2017 12 2.15083e+01 1.01230e+00 3556 2018 1 1.93661e+01 1.28446e+00 3952 2018 2 1.82433e+01 1.08861e+00 1794 2018 3 2.06762e+01 1.35673e+00 3153 2018 4 2.23665e+01 1.48056e+00 2209 2018 5 2.58696e+01 1.87640e+00 3050 2018 6 2.95009e+01 1.06109e+00 2174 2018 7 3.09445e+01 9.42066e-01 3678 2018 8 3.11492e+01 8.97145e-01 4259 2018 9 3.27028e+01 7.62907e-01 5557 2018 10 3.14669e+01 1.31748e+00 4780 2018 11 2.53208e+01 9.56345e-01 1643 2018 12 2.25500e+01 1.12939e+00 3445 2019 1 1.82403e+01 1.45736e+00 1309 2019 2 1.76698e+01 6.42799e-01 2183 2019 3 1.82070e+01 8.54615e-01 3016 2019 4 2.15441e+01 1.16568e+00 2696 2019 5 2.65605e+01 2.22850e+00 3453 2019 6 3.15285e+01 1.41894e+00 4307 2019 7 3.12965e+01 1.13632e+00 3882 2019 8 3.27086e+01 8.34637e-01 6153 2019 9 3.20821e+01 8.02854e-01 6682 2019 10 3.19944e+01 9.29231e-01 5252 2019 11 2.64999e+01 1.96661e+00 4938 2019 12 2.16331e+01 1.23667e+00 3416 2020 1 1.91194e+01 9.70052e-01 4153 2020 2 1.73504e+01 7.24095e-01 3447 2020 3 1.89354e+01 1.02859e+00 3275 2020 4 2.26205e+01 1.53486e+00 2916 2020 5 2.71281e+01 1.78523e+00 5049 2020 6 2.90034e+01 7.03256e-01 6614 2020 7 3.30531e+01 1.65102e+00 5483 2020 8 3.36475e+01 1.04129e+00 4639 2020 9 3.31583e+01 7.59656e-01 6446 2020 10 3.10223e+01 1.35100e+00 7293 2020 11 2.75351e+01 1.41450e+00 3594 2020 12 2.16960e+01 1.10726e+00 3971 2021 1 1.91055e+01 9.20133e-01 5456 2021 2 1.82283e+01 7.25756e-01 4374 2021 3 1.86067e+01 7.67887e-01 4195 2021 4 2.23294e+01 2.06959e+00 2947 2021 5 2.81303e+01 1.79401e+00 5038 2021 6 2.91033e+01 1.10116e+00 5748 2021 7 3.31115e+01 1.17251e+00 5903 2021 8 3.38587e+01 8.17116e-01 6283 2021 9 3.23447e+01 9.68866e-01 6076 2021 10 2.97703e+01 1.24825e+00 6639 2021 11 2.59174e+01 1.63934e+00 4735 2021 12 2.21425e+01 1.23596e+00 2591 2022 1 1.87672e+01 1.17998e+00 4021 2022 2 1.74289e+01 6.77893e-01 4393 2022 3 -6.96256e+01 2.85920e+02 3701 2022 4 2.20476e+01 1.46256e+00 1590 2022 5 2.49690e+01 9.41234e-01 3816 2022 6 2.90317e+01 9.68748e-01 4974 2022 7 3.16194e+01 1.53869e+00 3633 2022 8 3.43778e+01 7.08446e-01 5378 2022 9 3.30880e+01 9.27655e-01 5702 2022 10 3.06786e+01 6.23511e-01 4235 2022 11 2.69785e+01 1.56646e+00 2863 2022 12 2.27683e+01 1.22091e+00 4211 2023 1 1.89710e+01 6.96847e-01 2005 2023 2 1.75730e+01 8.12682e-01 2374 2023 3 1.99395e+01 8.67606e-01 4323 2023 4 2.23681e+01 1.94548e+00 4792 2023 5 2.56184e+01 1.39475e+00 4228 2023 6 2.90321e+01 9.42981e-01 5353 2023 7 3.18272e+01 1.23324e+00 5894 2023 8 3.42428e+01 6.84389e-01 5882 2023 9 3.31412e+01 8.90874e-01 5822 2023 10 3.10041e+01 1.08002e+00 5524 2023 11 2.70100e+01 1.59962e+00 4153 2023 12 2.30115e+01 1.34560e+00 4211 2024 1 2.01208e+01 6.83897e-01 3945 2024 2 1.93333e+01 5.33603e-01 4685 2024 3 1.95602e+01 8.35757e-01 3781 2024 4 2.15495e+01 7.43375e-01 738