YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.88926e+01 9.92489e-02 17 2000 3 1.97198e+01 7.00208e-01 146 2000 4 2.12811e+01 6.07361e-01 157 2000 5 2.45775e+01 1.54360e+00 198 2000 6 2.73664e+01 7.36733e-01 118 2000 7 2.97048e+01 1.64351e+00 186 2000 8 2.90546e+01 8.98571e-01 78 2000 9 2.82332e+01 8.42233e-01 175 2000 10 2.52846e+01 1.04096e+00 224 2000 11 2.37556e+01 1.57736e+00 153 2000 12 2.01256e+01 9.37886e-01 114 2001 1 1.66523e+01 1.32542e+00 96 2001 2 1.75370e+01 1.43079e+00 70 2001 3 1.76219e+01 1.38169e+00 121 2001 4 1.99742e+01 2.05804e+00 125 2001 5 2.39172e+01 1.36753e+00 227 2001 6 2.51345e+01 9.61905e-01 48 2001 7 2.75915e+01 2.08635e+00 123 2001 8 2.78457e+01 1.43897e+00 152 2001 9 2.87556e+01 9.39211e-01 160 2001 10 2.52274e+01 1.27923e+00 247 2001 11 2.30276e+01 4.90146e-01 192 2001 12 2.14273e+01 1.54936e+00 194 2002 1 1.82209e+01 9.02691e-01 76 2002 2 1.82177e+01 5.97269e-01 33 2002 3 1.74380e+01 1.53701e+00 81 2002 4 2.10376e+01 1.58117e+00 124 2002 5 2.52453e+01 9.62653e-01 202 2002 6 2.67181e+01 7.61124e-01 204 2002 7 2.91980e+01 1.08902e+00 598 2002 8 2.92631e+01 7.86294e-01 574 2002 9 2.84484e+01 1.23156e+00 512 2002 10 2.76022e+01 1.32518e+00 524 2002 11 2.25795e+01 1.97137e+00 523 2002 12 1.87355e+01 1.50103e+00 442 2003 1 1.72400e+01 1.17071e+00 659 2003 2 1.64916e+01 1.02543e+00 321 2003 3 1.88525e+01 9.70230e-01 325 2003 4 2.06888e+01 1.42772e+00 560 2003 5 2.49093e+01 1.37583e+00 644 2003 6 2.73046e+01 1.65505e+00 491 2003 7 2.86909e+01 9.64467e-01 526 2003 8 2.89383e+01 1.01161e+00 583 2003 9 2.86798e+01 7.39604e-01 558 2003 10 2.55683e+01 1.05798e+00 690 2003 11 2.39565e+01 1.00432e+00 778 2003 12 1.89409e+01 1.69594e+00 516 2004 1 1.67475e+01 1.61934e+00 429 2004 2 1.54095e+01 1.16636e+00 195 2004 3 1.80389e+01 1.08618e+00 692 2004 4 1.97651e+01 1.59884e+00 505 2004 5 2.43894e+01 1.95395e+00 802 2004 6 2.73640e+01 1.72360e+00 505 2004 7 2.94350e+01 1.11828e+00 644 2004 8 2.92352e+01 1.14266e+00 560 2004 9 2.75057e+01 1.52684e+00 600 2004 10 2.54394e+01 1.21349e+00 609 2004 11 2.34585e+01 1.50085e+00 537 2004 12 1.95980e+01 1.21659e+00 505 2005 1 1.79524e+01 1.06262e+00 368 2005 2 1.73796e+01 5.53475e-01 239 2005 3 1.73097e+01 1.22451e+00 475 2005 4 2.01000e+01 1.20819e+00 592 2005 5 2.34025e+01 1.76832e+00 786 2005 6 2.69343e+01 1.57852e+00 742 2005 7 2.89271e+01 1.52594e+00 673 2005 8 2.93955e+01 1.43159e+00 618 2005 9 2.86455e+01 1.18484e+00 881 2005 10 2.68282e+01 1.33714e+00 984 2005 11 2.27574e+01 1.28206e+00 625 2005 12 1.88804e+01 1.13762e+00 436 2006 1 1.77045e+01 1.22753e+00 458 2006 2 1.70995e+01 7.89884e-01 396 2006 3 1.84693e+01 9.77143e-01 583 2006 4 2.14474e+01 1.66440e+00 559 2006 5 2.40035e+01 1.50647e+00 697 2006 6 2.80379e+01 1.34232e+00 838 2006 7 2.93875e+01 1.27269e+00 526 2006 8 3.00218e+01 1.10877e+00 653 2006 9 2.93131e+01 1.08068e+00 622 2006 10 2.66743e+01 1.56769e+00 710 2006 11 2.15093e+01 1.98073e+00 735 2006 12 1.89937e+01 1.26951e+00 372 2007 1 1.80649e+01 1.13937e+00 218 2007 2 1.71788e+01 1.18592e+00 380 2007 3 1.74140e+01 1.24109e+00 673 2007 4 1.99706e+01 1.25714e+00 496 2007 5 2.32969e+01 7.97434e-01 780 2007 6 2.69963e+01 1.72442e+00 642 2007 7 2.84094e+01 1.24708e+00 512 2007 8 2.96429e+01 1.40150e+00 816 2007 9 2.90436e+01 1.19565e+00 687 2007 10 2.67861e+01 1.61190e+00 694 2007 11 2.26283e+01 1.53649e+00 791 2007 12 2.05201e+01 8.36818e-01 538 2008 1 1.89555e+01 1.12098e+00 476 2008 2 1.83250e+01 9.40089e-01 450 2008 3 1.77754e+01 1.25436e+00 563 2008 4 2.07581e+01 9.35101e-01 510 2008 5 2.40520e+01 2.16021e+00 674 2008 6 2.88195e+01 1.23830e+00 601 2008 7 2.88352e+01 1.12728e+00 603 2008 8 2.74619e+01 1.57049e+00 496 2008 9 2.76747e+01 9.61374e-01 719 2008 10 2.56692e+01 1.11593e+00 835 2008 11 2.30905e+01 1.01340e+00 821 2008 12 1.97318e+01 1.32178e+00 407 2009 1 1.77991e+01 1.05097e+00 427 2009 2 1.75256e+01 1.03774e+00 443 2009 3 1.89231e+01 1.51642e+00 568 2009 4 2.04345e+01 1.22169e+00 550 2009 5 2.46622e+01 1.40885e+00 683 2009 6 2.69772e+01 1.60547e+00 837 2009 7 2.78435e+01 1.06134e+00 602 2009 8 2.89593e+01 8.78490e-01 558 2009 9 2.84470e+01 7.60350e-01 606 2009 10 2.61918e+01 1.72792e+00 489 2009 11 2.18960e+01 1.49790e+00 594 2009 12 1.73925e+01 1.49897e+00 210 2010 1 1.57207e+01 1.29911e+00 359 2010 2 1.59634e+01 1.04857e+00 438 2010 3 1.64095e+01 1.21260e+00 479 2010 4 2.02069e+01 1.29228e+00 640 2010 5 2.55784e+01 2.36272e+00 680 2010 6 3.01117e+01 1.50470e+00 780 2010 7 2.96061e+01 1.20782e+00 698 2010 8 2.95458e+01 1.43499e+00 537 2010 9 2.92787e+01 9.40094e-01 733 2010 10 2.55467e+01 1.26166e+00 1007 2010 11 2.20938e+01 1.19470e+00 748 2010 12 1.83868e+01 1.81414e+00 688 2011 1 1.61404e+01 1.61412e+00 506 2011 2 1.58750e+01 9.68142e-01 331 2011 3 1.86755e+01 1.11390e+00 607 2011 4 2.16439e+01 1.34569e+00 638 2011 5 2.46083e+01 1.45603e+00 959 2011 6 2.88810e+01 1.19204e+00 901 2011 7 2.95519e+01 1.36569e+00 568 2011 8 2.98098e+01 1.46890e+00 810 2011 9 2.82328e+01 9.19698e-01 762 2011 10 2.55695e+01 1.43309e+00 824 2011 11 2.21296e+01 9.38244e-01 600 2011 12 1.98518e+01 1.18070e+00 473 2012 1 1.79721e+01 1.03507e+00 556 2012 2 1.69616e+01 1.28246e+00 159 2012 3 2.02270e+01 1.86329e+00 524 2012 4 2.24370e+01 8.09422e-01 812 2012 5 2.55744e+01 1.49592e+00 913 2012 6 2.70170e+01 7.09796e-01 603 2012 7 2.82435e+01 1.58135e+00 448 2012 8 2.91866e+01 1.05760e+00 418 2012 9 2.76456e+01 9.94358e-01 732 2012 10 2.59342e+01 1.10439e+00 894 2012 11 2.17340e+01 1.11104e+00 711 2012 12 2.13206e+01 1.48695e+00 431 2013 1 1.86103e+01 7.74689e-01 353 2013 2 1.89603e+01 8.51715e-01 316 2013 3 1.79060e+01 9.99703e-01 513 2013 4 2.02367e+01 9.89074e-01 360 2013 5 2.33917e+01 2.00561e+00 800 2013 6 2.76763e+01 1.34018e+00 524 2013 7 2.84285e+01 1.04582e+00 444 2013 8 2.88676e+01 1.23764e+00 510 2013 9 2.94802e+01 9.46569e-01 731 2013 10 2.66850e+01 1.19872e+00 600 2013 11 2.25117e+01 1.79708e+00 537 2013 12 1.98087e+01 1.38850e+00 375 2014 1 1.60714e+01 1.40947e+00 344 2014 2 1.52909e+01 1.25621e+00 285 2014 3 1.71999e+01 7.00565e-01 430 2014 4 1.99501e+01 1.54488e+00 524 2014 5 2.39679e+01 1.56458e+00 627 2014 6 2.81645e+01 1.54458e+00 740 2014 7 2.79915e+01 1.35323e+00 711 2014 8 2.92343e+01 1.45497e+00 707 2014 9 2.94458e+01 1.55141e+00 613 2014 10 2.66712e+01 1.04891e+00 889 2014 11 2.14979e+01 2.02487e+00 633 2014 12 2.00761e+01 1.40248e+00 471 2015 1 1.87573e+01 1.20136e+00 403 2015 2 1.73740e+01 1.17029e+00 449 2015 3 1.88405e+01 1.67178e+00 313 2015 4 2.15850e+01 1.80975e+00 384 2015 5 2.50824e+01 1.90894e+00 768 2015 6 2.86074e+01 1.25808e+00 749 2015 7 2.86800e+01 1.39255e+00 619 2015 8 2.94040e+01 1.30709e+00 714 2015 9 2.87575e+01 9.19772e-01 602 2015 10 2.57390e+01 1.01514e+00 659 2015 11 2.36910e+01 1.50934e+00 660 2015 12 2.10542e+01 1.40408e+00 399 2016 1 1.83508e+01 1.39040e+00 378 2016 2 1.72771e+01 1.00848e+00 566 2016 3 1.83947e+01 1.21463e+00 397 2016 4 2.06964e+01 1.57355e+00 596 2016 5 2.46622e+01 1.66999e+00 532 2016 6 2.82892e+01 1.66537e+00 657 2016 7 3.00285e+01 1.16817e+00 633 2016 8 2.95808e+01 1.29965e+00 659 2016 9 2.94880e+01 7.79322e-01 696 2016 10 2.68155e+01 1.39039e+00 798 2016 11 2.40389e+01 1.44679e+00 711 2016 12 2.03756e+01 1.54488e+00 520 2017 1 2.02265e+01 9.64656e-01 545 2017 2 1.92274e+01 9.46123e-01 457 2017 3 1.94095e+01 1.30247e+00 640 2017 4 2.19330e+01 1.05498e+00 686 2017 5 2.44039e+01 1.17237e+00 658 2017 6 2.70698e+01 1.46643e+00 319 2017 7 2.94095e+01 1.19737e+00 738 2017 8 3.01174e+01 1.45268e+00 511 2017 9 2.80150e+01 1.20374e+00 655 2017 10 2.65648e+01 1.06314e+00 835 2017 11 2.33129e+01 8.84508e-01 752 2017 12 2.03235e+01 1.63040e+00 377 2018 1 1.82412e+01 9.46075e-01 510 2018 2 2.03831e+01 1.43835e+00 430 2018 3 2.00660e+01 1.49626e+00 656 2018 4 2.05848e+01 7.76830e-01 666 2018 5 2.51984e+01 2.02002e+00 743 2018 6 2.85062e+01 1.18023e+00 629 2018 7 2.89425e+01 1.44337e+00 675 2018 8 2.90794e+01 1.34934e+00 631 2018 9 2.94197e+01 1.11382e+00 755 2018 10 2.76720e+01 1.77393e+00 860 2018 11 2.27234e+01 1.56235e+00 308 2018 12 1.86494e+01 1.34576e+00 306 2019 1 1.81097e+01 1.02074e+00 400 2019 2 1.76524e+01 1.43484e+00 158 2019 3 1.85798e+01 1.16983e+00 542 2019 4 2.07066e+01 1.46199e+00 467 2019 5 2.61214e+01 1.92337e+00 909 2019 6 2.86130e+01 1.43166e+00 638 2019 7 2.94011e+01 1.43577e+00 635 2019 8 3.01144e+01 1.12758e+00 527 2019 9 2.94987e+01 9.03974e-01 927 2019 10 2.82805e+01 1.04057e+00 515 2019 11 2.30408e+01 1.73935e+00 564 2019 12 2.01945e+01 1.52168e+00 423 2020 1 1.85326e+01 1.38032e+00 461 2020 2 1.79064e+01 1.03027e+00 418 2020 3 2.15414e+01 2.23094e+00 490 2020 4 2.22484e+01 6.91299e-01 464 2020 5 2.39597e+01 1.31453e+00 718 2020 6 2.77296e+01 1.07485e+00 515 2020 7 2.88157e+01 1.31750e+00 559 2020 8 3.01534e+01 8.15913e-01 430 2020 9 2.89260e+01 1.98716e+00 432 2020 10 2.54893e+01 9.68946e-01 717 2020 11 2.39649e+01 9.92606e-01 796 2020 12 2.04756e+01 1.40195e+00 672 2021 1 1.74235e+01 1.07561e+00 429 2021 2 1.80000e+01 1.13383e+00 406 2021 3 1.85389e+01 8.71261e-01 454 2021 4 2.05756e+01 1.03488e+00 628 2021 5 2.39479e+01 1.36710e+00 651 2021 6 2.65894e+01 1.27675e+00 326 2021 7 2.92529e+01 1.09973e+00 533 2021 8 3.02397e+01 1.03922e+00 648 2021 9 2.82412e+01 8.32121e-01 593 2021 10 2.67626e+01 9.43121e-01 535 2021 11 2.21332e+01 1.12301e+00 773 2021 12 1.98230e+01 9.60157e-01 567 2022 1 1.90469e+01 8.45190e-01 502 2022 2 1.73267e+01 1.48500e+00 566 2022 3 1.89512e+01 5.81655e-01 754 2022 4 2.12178e+01 7.92328e-01 516 2022 5 2.51731e+01 1.04332e+00 747 2022 6 2.88959e+01 1.55582e+00 815 2022 7 2.99204e+01 1.06319e+00 635 2022 8 3.04747e+01 1.07474e+00 492 2022 9 2.94806e+01 9.16451e-01 777 2022 10 2.58351e+01 1.41798e+00 768 2022 11 2.30085e+01 1.36520e+00 500 2022 12 2.15890e+01 1.11572e+00 690 2023 1 2.01134e+01 8.40044e-01 550 2023 2 2.00290e+01 8.96095e-01 450 2023 3 2.07628e+01 1.07279e+00 462 2023 4 2.18806e+01 5.29788e-01 480 2023 5 2.40346e+01 1.62309e+00 639 2023 6 2.70803e+01 1.49974e+00 618 2023 7 2.89484e+01 1.41877e+00 681 2023 8 3.07169e+01 1.04792e+00 920 2023 9 3.04655e+01 7.68077e-01 697 2023 10 2.58839e+01 1.89184e+00 777 2023 11 2.28804e+01 1.35235e+00 560 2023 12 1.88626e+01 1.43106e+00 416 2024 1 1.73873e+01 1.66422e+00 374 2024 2 1.65200e+01 8.83947e-01 435 2024 3 1.85593e+01 1.24472e+00 420 2024 4 1.99791e+01 4.89753e-01 48