YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.06954e+01 3.71332e-01 28 2000 3 2.06359e+01 6.36939e-01 144 2000 4 2.16834e+01 6.20921e-01 154 2000 5 2.50756e+01 1.72770e+00 184 2000 6 2.81519e+01 6.00428e-01 144 2000 7 2.95502e+01 1.44949e+00 127 2000 8 2.84897e+01 1.08682e+00 80 2000 9 2.81167e+01 1.45915e+00 96 2000 10 2.60562e+01 8.77607e-01 236 2000 11 2.44668e+01 1.08547e+00 159 2000 12 2.08748e+01 1.22982e+00 86 2001 1 1.93966e+01 8.35574e-01 112 2001 2 1.87451e+01 1.16932e+00 91 2001 3 1.96144e+01 1.30094e+00 127 2001 4 2.11433e+01 1.84830e+00 165 2001 5 2.41788e+01 1.05992e+00 272 2001 6 2.64249e+01 7.50431e-01 48 2001 7 2.91720e+01 4.40275e-01 48 2001 8 2.79657e+01 1.57603e+00 183 2001 9 2.85681e+01 8.44181e-01 172 2001 10 2.55799e+01 9.02429e-01 204 2001 11 2.35604e+01 5.36861e-01 240 2001 12 2.32923e+01 1.44037e+00 164 2002 1 2.04358e+01 1.10716e+00 96 2002 2 1.89298e+01 2.18533e+00 56 2002 3 1.93141e+01 1.10369e+00 95 2002 4 2.23431e+01 1.84142e+00 144 2002 5 2.53784e+01 9.14672e-01 203 2002 6 2.69204e+01 7.19322e-01 176 2002 7 2.88134e+01 1.50436e+00 616 2002 8 2.90670e+01 9.67631e-01 617 2002 9 2.85105e+01 1.01605e+00 418 2002 10 2.77464e+01 1.33599e+00 559 2002 11 2.45942e+01 1.59591e+00 484 2002 12 2.12324e+01 1.49247e+00 515 2003 1 1.84479e+01 8.70873e-01 616 2003 2 1.78762e+01 1.21098e+00 359 2003 3 1.94558e+01 1.15522e+00 244 2003 4 2.09430e+01 1.17200e+00 505 2003 5 2.55620e+01 1.30847e+00 633 2003 6 2.76663e+01 1.44824e+00 431 2003 7 2.87411e+01 9.12578e-01 425 2003 8 2.87887e+01 1.01353e+00 548 2003 9 2.83474e+01 1.09497e+00 508 2003 10 2.59734e+01 7.91232e-01 662 2003 11 2.47405e+01 8.16902e-01 797 2003 12 2.19517e+01 1.52468e+00 523 2004 1 1.98971e+01 1.44292e+00 494 2004 2 1.77912e+01 1.25214e+00 241 2004 3 1.92082e+01 1.14366e+00 757 2004 4 2.01733e+01 1.08784e+00 559 2004 5 2.43934e+01 2.03106e+00 903 2004 6 2.83278e+01 1.48171e+00 624 2004 7 2.95909e+01 1.02878e+00 589 2004 8 2.94396e+01 1.29615e+00 555 2004 9 2.74749e+01 1.27819e+00 588 2004 10 2.55201e+01 1.19453e+00 634 2004 11 2.42315e+01 1.49738e+00 472 2004 12 2.22552e+01 1.10793e+00 418 2005 1 1.95964e+01 1.72114e+00 609 2005 2 1.89991e+01 9.72038e-01 393 2005 3 1.89231e+01 1.10795e+00 451 2005 4 2.06073e+01 1.00730e+00 544 2005 5 2.36355e+01 1.85551e+00 674 2005 6 2.68486e+01 1.59777e+00 701 2005 7 2.86681e+01 1.81931e+00 638 2005 8 2.92361e+01 1.31453e+00 593 2005 9 2.86150e+01 9.11015e-01 866 2005 10 2.70816e+01 1.00776e+00 805 2005 11 2.40550e+01 1.21825e+00 604 2005 12 2.09801e+01 9.53630e-01 525 2006 1 1.95006e+01 7.16767e-01 422 2006 2 1.87825e+01 8.44039e-01 481 2006 3 1.98378e+01 9.65132e-01 713 2006 4 2.25443e+01 1.53810e+00 664 2006 5 2.46886e+01 1.66719e+00 725 2006 6 2.81534e+01 1.46316e+00 916 2006 7 2.95142e+01 1.19939e+00 644 2006 8 3.01440e+01 1.13562e+00 683 2006 9 2.94709e+01 1.11873e+00 588 2006 10 2.74187e+01 1.09610e+00 685 2006 11 2.33277e+01 1.41980e+00 686 2006 12 2.05997e+01 9.63035e-01 409 2007 1 1.97355e+01 7.10703e-01 215 2007 2 1.87243e+01 1.04629e+00 399 2007 3 1.89257e+01 1.18909e+00 664 2007 4 2.16731e+01 1.22710e+00 563 2007 5 2.37835e+01 1.01734e+00 846 2007 6 2.71072e+01 1.58013e+00 669 2007 7 2.90583e+01 1.02181e+00 551 2007 8 2.96565e+01 1.62664e+00 719 2007 9 2.89918e+01 1.01592e+00 602 2007 10 2.74060e+01 1.03949e+00 581 2007 11 2.38331e+01 1.15734e+00 905 2007 12 2.15811e+01 1.19489e+00 464 2008 1 2.03438e+01 1.19310e+00 480 2008 2 1.93615e+01 1.07119e+00 625 2008 3 1.91543e+01 1.31414e+00 503 2008 4 2.10583e+01 1.23750e+00 580 2008 5 2.38133e+01 1.43444e+00 830 2008 6 2.89355e+01 1.30451e+00 722 2008 7 2.93611e+01 1.43012e+00 617 2008 8 2.83257e+01 1.24089e+00 469 2008 9 2.78345e+01 8.56046e-01 624 2008 10 2.62880e+01 9.15946e-01 777 2008 11 2.38644e+01 1.02685e+00 802 2008 12 2.08573e+01 1.01597e+00 510 2009 1 1.97426e+01 1.14258e+00 592 2009 2 1.96285e+01 1.51840e+00 568 2009 3 1.98031e+01 1.26508e+00 586 2009 4 2.06979e+01 1.02818e+00 636 2009 5 2.48065e+01 1.60874e+00 666 2009 6 2.78534e+01 1.69688e+00 887 2009 7 2.85144e+01 1.50760e+00 660 2009 8 2.91400e+01 1.06939e+00 525 2009 9 2.84783e+01 8.59624e-01 504 2009 10 2.66730e+01 1.49363e+00 571 2009 11 2.37902e+01 1.22524e+00 416 2009 12 2.01006e+01 1.06331e+00 158 2010 1 1.97034e+01 1.10757e+00 431 2010 2 1.68919e+01 1.08641e+00 409 2010 3 1.67089e+01 1.24142e+00 490 2010 4 1.93908e+01 1.44975e+00 563 2010 5 2.51655e+01 2.24658e+00 749 2010 6 2.98321e+01 1.45029e+00 800 2010 7 2.92013e+01 1.17055e+00 667 2010 8 2.94354e+01 1.51205e+00 491 2010 9 2.91735e+01 8.61377e-01 829 2010 10 2.60087e+01 1.21593e+00 999 2010 11 2.34691e+01 1.13971e+00 738 2010 12 2.10882e+01 1.58889e+00 704 2011 1 1.77219e+01 1.27366e+00 586 2011 2 1.75173e+01 7.79054e-01 448 2011 3 1.95620e+01 1.06567e+00 502 2011 4 2.20371e+01 1.33887e+00 693 2011 5 2.44856e+01 1.32957e+00 907 2011 6 2.87832e+01 1.15414e+00 795 2011 7 3.00815e+01 1.19810e+00 554 2011 8 3.06187e+01 1.15110e+00 807 2011 9 2.84496e+01 6.47680e-01 749 2011 10 2.60911e+01 1.27985e+00 910 2011 11 2.36225e+01 8.06476e-01 584 2011 12 2.15593e+01 1.14944e+00 550 2012 1 2.01939e+01 8.39934e-01 605 2012 2 1.84171e+01 1.21714e+00 100 2012 3 2.13853e+01 1.23352e+00 559 2012 4 2.28778e+01 6.53476e-01 859 2012 5 2.52444e+01 1.48990e+00 915 2012 6 2.68112e+01 7.55217e-01 664 2012 7 2.83170e+01 1.37134e+00 521 2012 8 2.89812e+01 1.37507e+00 486 2012 9 2.77329e+01 8.76111e-01 557 2012 10 2.64657e+01 8.79136e-01 854 2012 11 2.35477e+01 1.09656e+00 600 2012 12 2.17311e+01 1.75303e+00 476 2013 1 2.01715e+01 6.78368e-01 414 2013 2 2.02408e+01 9.78197e-01 366 2013 3 1.90765e+01 6.63013e-01 604 2013 4 2.10983e+01 1.32712e+00 427 2013 5 2.34643e+01 1.64113e+00 688 2013 6 2.72909e+01 1.64782e+00 661 2013 7 2.82616e+01 7.63403e-01 350 2013 8 2.91266e+01 1.51306e+00 536 2013 9 2.93515e+01 8.37030e-01 769 2013 10 2.68591e+01 1.02948e+00 583 2013 11 2.43637e+01 1.35006e+00 428 2013 12 2.20766e+01 1.01989e+00 488 2014 1 1.92576e+01 1.49762e+00 330 2014 2 1.79452e+01 7.03956e-01 343 2014 3 1.82194e+01 8.01279e-01 491 2014 4 1.97989e+01 1.58370e+00 526 2014 5 2.33822e+01 1.53110e+00 613 2014 6 2.78009e+01 2.10189e+00 651 2014 7 2.90692e+01 1.07352e+00 654 2014 8 2.98592e+01 1.10401e+00 661 2014 9 2.96366e+01 1.17979e+00 582 2014 10 2.70119e+01 1.07882e+00 970 2014 11 2.30965e+01 1.30752e+00 680 2014 12 2.27755e+01 8.72532e-01 472 2015 1 2.04116e+01 8.89356e-01 320 2015 2 1.94421e+01 8.41653e-01 506 2015 3 2.04154e+01 7.99740e-01 423 2015 4 2.19621e+01 1.55653e+00 334 2015 5 2.53082e+01 1.73689e+00 716 2015 6 2.86010e+01 1.31524e+00 699 2015 7 2.94444e+01 1.26760e+00 625 2015 8 2.99383e+01 9.60412e-01 755 2015 9 2.82920e+01 1.72991e+00 490 2015 10 2.64415e+01 5.89718e-01 650 2015 11 2.52439e+01 1.36836e+00 633 2015 12 2.27875e+01 1.15608e+00 447 2016 1 2.17726e+01 1.13250e+00 416 2016 2 1.91157e+01 1.26679e+00 567 2016 3 1.90457e+01 9.12957e-01 379 2016 4 2.08467e+01 1.11271e+00 568 2016 5 2.43663e+01 1.45281e+00 553 2016 6 2.83269e+01 1.37360e+00 672 2016 7 3.05431e+01 1.36705e+00 698 2016 8 2.94973e+01 8.75639e-01 524 2016 9 2.91583e+01 8.62423e-01 693 2016 10 2.75054e+01 1.01656e+00 813 2016 11 2.51368e+01 1.16065e+00 738 2016 12 2.27124e+01 9.63385e-01 567 2017 1 2.20346e+01 7.88418e-01 525 2017 2 1.99669e+01 1.27429e+00 602 2017 3 2.08339e+01 1.11761e+00 738 2017 4 2.20996e+01 1.17848e+00 692 2017 5 2.46808e+01 1.35792e+00 606 2017 6 2.70224e+01 1.10722e+00 310 2017 7 2.94735e+01 1.03987e+00 763 2017 8 2.96517e+01 1.33534e+00 521 2017 9 2.80163e+01 1.25197e+00 647 2017 10 2.70043e+01 8.84159e-01 771 2017 11 2.46252e+01 1.35361e+00 703 2017 12 2.20378e+01 1.07062e+00 388 2018 1 2.01387e+01 1.01212e+00 533 2018 2 2.08408e+01 1.19150e+00 547 2018 3 2.11446e+01 1.50918e+00 666 2018 4 2.18352e+01 7.45621e-01 610 2018 5 2.51927e+01 1.83857e+00 752 2018 6 2.86038e+01 1.87764e+00 596 2018 7 2.94223e+01 1.44467e+00 677 2018 8 2.92326e+01 1.31319e+00 599 2018 9 2.96665e+01 8.17237e-01 677 2018 10 2.78837e+01 1.51984e+00 846 2018 11 2.46743e+01 1.31906e+00 277 2018 12 2.17348e+01 1.21499e+00 289 2019 1 1.98402e+01 1.25581e+00 495 2019 2 1.95603e+01 1.36137e+00 210 2019 3 1.94515e+01 1.23287e+00 558 2019 4 2.07913e+01 1.36065e+00 502 2019 5 2.58923e+01 1.89816e+00 870 2019 6 2.88520e+01 1.35220e+00 519 2019 7 2.93357e+01 1.14993e+00 565 2019 8 2.97189e+01 9.14988e-01 533 2019 9 2.94481e+01 1.08140e+00 868 2019 10 2.82994e+01 9.21464e-01 546 2019 11 2.47387e+01 1.20654e+00 555 2019 12 2.29649e+01 1.13816e+00 279 2020 1 2.14519e+01 1.09653e+00 520 2020 2 2.03283e+01 8.73222e-01 435 2020 3 2.20510e+01 1.91557e+00 533 2020 4 2.27541e+01 9.29740e-01 453 2020 5 2.42757e+01 1.29232e+00 701 2020 6 2.77609e+01 1.20705e+00 491 2020 7 2.88591e+01 1.35050e+00 532 2020 8 3.00419e+01 8.61049e-01 486 2020 9 2.88938e+01 1.56163e+00 434 2020 10 2.57773e+01 9.10618e-01 652 2020 11 2.48677e+01 1.25313e+00 800 2020 12 2.20700e+01 1.23945e+00 708 2021 1 2.00672e+01 1.26205e+00 435 2021 2 1.94638e+01 1.08844e+00 435 2021 3 2.00122e+01 9.56449e-01 559 2021 4 2.17593e+01 5.88918e-01 636 2021 5 2.39187e+01 1.34584e+00 632 2021 6 2.70552e+01 1.25010e+00 422 2021 7 2.92638e+01 1.00186e+00 530 2021 8 3.01540e+01 9.47440e-01 528 2021 9 2.83000e+01 6.92534e-01 528 2021 10 2.69458e+01 1.13754e+00 472 2021 11 2.41794e+01 1.26286e+00 757 2021 12 2.20810e+01 5.64910e-01 577 2022 1 2.11703e+01 1.10918e+00 599 2022 2 1.98203e+01 8.48354e-01 519 2022 3 2.05074e+01 5.63690e-01 719 2022 4 2.23782e+01 1.27960e+00 406 2022 5 2.52023e+01 1.05082e+00 654 2022 6 2.85703e+01 1.55947e+00 782 2022 7 2.96542e+01 8.84488e-01 570 2022 8 3.01337e+01 8.73135e-01 555 2022 9 2.94678e+01 8.93087e-01 683 2022 10 2.63868e+01 1.28445e+00 717 2022 11 2.41270e+01 1.28724e+00 458 2022 12 2.31568e+01 1.22434e+00 601 2023 1 2.20012e+01 7.51316e-01 598 2023 2 2.07140e+01 1.14896e+00 563 2023 3 2.14149e+01 7.63075e-01 731 2023 4 2.18896e+01 1.01025e+00 513 2023 5 2.43438e+01 1.80960e+00 600 2023 6 2.72307e+01 1.77238e+00 566 2023 7 3.05850e+01 1.05994e+00 629 2023 8 3.12529e+01 8.98460e-01 834 2023 9 3.05369e+01 8.36079e-01 603 2023 10 2.65379e+01 1.72550e+00 659 2023 11 2.44862e+01 1.06407e+00 497 2023 12 2.16327e+01 9.60452e-01 296 2024 1 2.02060e+01 8.84046e-01 323 2024 2 1.93763e+01 7.79572e-01 486 2024 3 2.06934e+01 1.27746e+00 415 2024 4 2.19198e+01 4.35414e-01 32