YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.01400e+01 6.59458e-01 32 2000 3 2.07908e+01 7.06840e-01 160 2000 4 2.16658e+01 1.06684e+00 144 2000 5 2.51889e+01 1.81904e+00 176 2000 6 2.78480e+01 7.01108e-01 126 2000 7 2.94942e+01 1.40658e+00 102 2000 8 2.78912e+01 1.71164e+00 64 2000 9 2.83794e+01 5.57543e-01 108 2000 10 2.61826e+01 6.02891e-01 240 2000 11 2.46441e+01 1.12537e+00 116 2000 12 2.17709e+01 7.19703e-01 112 2001 1 1.84929e+01 9.66045e-01 115 2001 2 1.95452e+01 1.59621e+00 88 2001 3 1.92567e+01 1.34762e+00 104 2001 4 2.16503e+01 1.24364e+00 143 2001 5 2.38755e+01 1.09072e+00 228 2001 6 2.54648e+01 4.17613e-01 21 2001 7 2.86149e+01 5.06541e-01 64 2001 8 2.81574e+01 1.25091e+00 130 2001 9 2.86903e+01 8.57473e-01 160 2001 10 2.52627e+01 1.33691e+00 240 2001 11 2.35316e+01 5.30328e-01 190 2001 12 2.35646e+01 1.25394e+00 115 2002 1 2.04595e+01 9.85296e-01 96 2002 2 1.93028e+01 1.32912e+00 72 2002 3 1.95232e+01 2.06487e+00 87 2002 4 2.31099e+01 1.48724e+00 128 2002 5 2.55626e+01 1.12239e+00 219 2002 6 2.69578e+01 6.28265e-01 190 2002 7 2.89857e+01 1.24365e+00 545 2002 8 2.89815e+01 9.03885e-01 524 2002 9 2.85971e+01 9.91011e-01 411 2002 10 2.78110e+01 1.17824e+00 519 2002 11 2.44751e+01 1.85898e+00 516 2002 12 2.03958e+01 1.55692e+00 527 2003 1 1.82542e+01 7.83324e-01 566 2003 2 1.75704e+01 1.00212e+00 342 2003 3 1.89764e+01 1.34619e+00 244 2003 4 2.05204e+01 9.56493e-01 550 2003 5 2.52724e+01 1.35298e+00 691 2003 6 2.77706e+01 1.31579e+00 427 2003 7 2.87724e+01 1.04119e+00 307 2003 8 2.83549e+01 1.32286e+00 641 2003 9 2.85319e+01 1.06034e+00 554 2003 10 2.57405e+01 8.53696e-01 750 2003 11 2.46829e+01 1.18976e+00 753 2003 12 2.18277e+01 1.35717e+00 375 2004 1 1.96479e+01 1.15498e+00 447 2004 2 1.80498e+01 1.17373e+00 223 2004 3 1.95193e+01 1.06539e+00 676 2004 4 2.00549e+01 1.05849e+00 498 2004 5 2.43354e+01 1.89652e+00 838 2004 6 2.83465e+01 1.29875e+00 631 2004 7 2.95429e+01 1.03681e+00 640 2004 8 2.92734e+01 1.18284e+00 654 2004 9 2.75055e+01 1.52859e+00 561 2004 10 2.56265e+01 1.10003e+00 530 2004 11 2.44546e+01 1.23137e+00 443 2004 12 2.12273e+01 1.00587e+00 418 2005 1 1.98512e+01 1.15840e+00 489 2005 2 1.91385e+01 8.48317e-01 428 2005 3 1.86290e+01 1.37162e+00 350 2005 4 2.02276e+01 1.10791e+00 608 2005 5 2.35899e+01 1.74514e+00 708 2005 6 2.71085e+01 1.41907e+00 716 2005 7 2.83764e+01 1.64425e+00 663 2005 8 2.95046e+01 1.50346e+00 575 2005 9 2.85067e+01 1.01572e+00 769 2005 10 2.69374e+01 1.03607e+00 799 2005 11 2.40541e+01 9.73811e-01 607 2005 12 2.07492e+01 1.22083e+00 463 2006 1 1.94723e+01 8.74926e-01 477 2006 2 1.88140e+01 6.21166e-01 382 2006 3 1.96503e+01 9.87382e-01 761 2006 4 2.25343e+01 1.48721e+00 696 2006 5 2.46741e+01 1.60304e+00 777 2006 6 2.80817e+01 1.68183e+00 899 2006 7 2.93129e+01 1.23076e+00 600 2006 8 3.02984e+01 9.24828e-01 615 2006 9 2.95927e+01 1.07515e+00 563 2006 10 2.73052e+01 1.28864e+00 637 2006 11 2.32338e+01 1.24124e+00 530 2006 12 2.07377e+01 1.56156e+00 383 2007 1 1.99641e+01 6.51272e-01 194 2007 2 1.87022e+01 1.12991e+00 481 2007 3 1.89938e+01 1.00676e+00 661 2007 4 2.15548e+01 1.53995e+00 568 2007 5 2.37191e+01 8.08154e-01 799 2007 6 2.67794e+01 1.61098e+00 596 2007 7 2.89893e+01 1.46793e+00 432 2007 8 2.96548e+01 1.20246e+00 712 2007 9 2.89754e+01 9.39516e-01 509 2007 10 2.74598e+01 9.27781e-01 529 2007 11 2.40563e+01 8.85009e-01 780 2007 12 2.16683e+01 8.95573e-01 516 2008 1 2.04123e+01 9.96335e-01 456 2008 2 1.96053e+01 1.04986e+00 574 2008 3 1.88825e+01 1.22131e+00 611 2008 4 2.12938e+01 1.00908e+00 530 2008 5 2.38614e+01 1.63341e+00 720 2008 6 2.88825e+01 1.33258e+00 646 2008 7 2.96048e+01 1.47293e+00 564 2008 8 2.82728e+01 1.45419e+00 501 2008 9 2.76811e+01 9.07131e-01 615 2008 10 2.63426e+01 9.49977e-01 745 2008 11 2.35049e+01 1.24068e+00 802 2008 12 2.12536e+01 7.70519e-01 435 2009 1 1.99506e+01 1.28805e+00 494 2009 2 1.93119e+01 8.82124e-01 588 2009 3 1.98857e+01 1.06922e+00 559 2009 4 2.06815e+01 1.10415e+00 602 2009 5 2.47419e+01 1.80560e+00 652 2009 6 2.75410e+01 1.82086e+00 805 2009 7 2.83353e+01 1.79729e+00 514 2009 8 2.91005e+01 1.23864e+00 556 2009 9 2.84061e+01 9.37200e-01 481 2009 10 2.66703e+01 1.42907e+00 570 2009 11 2.35646e+01 1.07320e+00 315 2009 12 2.04114e+01 1.03519e+00 150 2010 1 1.91413e+01 1.47898e+00 443 2010 2 1.68152e+01 1.07148e+00 344 2010 3 1.69225e+01 9.80877e-01 485 2010 4 1.95320e+01 1.40465e+00 555 2010 5 2.50712e+01 2.22362e+00 741 2010 6 2.95853e+01 1.56749e+00 764 2010 7 2.92435e+01 8.96819e-01 588 2010 8 2.95262e+01 1.54772e+00 452 2010 9 2.90129e+01 8.56265e-01 779 2010 10 2.60379e+01 1.03876e+00 990 2010 11 2.34847e+01 9.56992e-01 774 2010 12 2.06225e+01 1.54726e+00 655 2011 1 1.75264e+01 1.10562e+00 548 2011 2 1.77049e+01 1.13649e+00 432 2011 3 1.97389e+01 8.17868e-01 552 2011 4 2.19299e+01 1.36966e+00 670 2011 5 2.45272e+01 1.42053e+00 868 2011 6 2.87782e+01 1.50766e+00 893 2011 7 3.01227e+01 9.18972e-01 554 2011 8 3.05343e+01 1.14201e+00 866 2011 9 2.84599e+01 6.50571e-01 688 2011 10 2.62010e+01 1.30943e+00 740 2011 11 2.35353e+01 7.73374e-01 543 2011 12 2.14143e+01 1.19264e+00 613 2012 1 2.01964e+01 6.70988e-01 474 2012 2 1.90645e+01 6.89160e-01 93 2012 3 2.11741e+01 1.05766e+00 571 2012 4 2.26205e+01 7.24308e-01 878 2012 5 2.56038e+01 1.61848e+00 818 2012 6 2.68659e+01 9.00829e-01 524 2012 7 2.81391e+01 1.12227e+00 567 2012 8 2.89947e+01 1.10088e+00 446 2012 9 2.78404e+01 9.80125e-01 542 2012 10 2.65794e+01 1.06134e+00 795 2012 11 2.31283e+01 5.52993e-01 545 2012 12 2.20228e+01 1.35853e+00 428 2013 1 2.02822e+01 7.27221e-01 446 2013 2 1.97708e+01 1.43362e+00 378 2013 3 1.88462e+01 8.45697e-01 562 2013 4 2.07911e+01 1.07032e+00 413 2013 5 2.32249e+01 1.74674e+00 703 2013 6 2.72144e+01 1.77045e+00 671 2013 7 2.80264e+01 9.57261e-01 303 2013 8 2.91447e+01 1.65486e+00 563 2013 9 2.92454e+01 1.14937e+00 764 2013 10 2.71539e+01 1.00665e+00 633 2013 11 2.36693e+01 1.63310e+00 429 2013 12 2.22857e+01 1.17682e+00 484 2014 1 1.89689e+01 1.47778e+00 362 2014 2 1.83618e+01 7.45036e-01 372 2014 3 1.83103e+01 6.39172e-01 447 2014 4 2.02145e+01 1.82054e+00 463 2014 5 2.34803e+01 1.64633e+00 633 2014 6 2.76274e+01 1.85392e+00 639 2014 7 2.88853e+01 1.17369e+00 568 2014 8 2.98677e+01 9.88963e-01 621 2014 9 2.96231e+01 1.23619e+00 611 2014 10 2.70843e+01 1.02262e+00 863 2014 11 2.26243e+01 1.63270e+00 621 2014 12 2.20916e+01 1.24719e+00 521 2015 1 2.05748e+01 1.07660e+00 378 2015 2 1.93675e+01 9.96952e-01 520 2015 3 2.02344e+01 1.09582e+00 448 2015 4 2.19626e+01 1.48045e+00 343 2015 5 2.53792e+01 1.80002e+00 801 2015 6 2.85269e+01 1.15351e+00 665 2015 7 2.93103e+01 1.30995e+00 604 2015 8 2.96744e+01 1.05713e+00 697 2015 9 2.86009e+01 1.14395e+00 446 2015 10 2.63176e+01 9.95841e-01 637 2015 11 2.53221e+01 1.49678e+00 594 2015 12 2.28317e+01 8.18467e-01 416 2016 1 2.14489e+01 1.72164e+00 351 2016 2 1.92484e+01 1.16348e+00 587 2016 3 1.90485e+01 1.06506e+00 427 2016 4 2.08067e+01 1.29127e+00 560 2016 5 2.44380e+01 1.51618e+00 655 2016 6 2.86315e+01 1.15090e+00 615 2016 7 3.04618e+01 1.05126e+00 675 2016 8 2.95053e+01 1.33108e+00 549 2016 9 2.92994e+01 8.80199e-01 634 2016 10 2.72370e+01 1.12463e+00 802 2016 11 2.47168e+01 1.16492e+00 687 2016 12 2.21055e+01 1.12510e+00 633 2017 1 2.13741e+01 1.08594e+00 478 2017 2 1.96873e+01 1.06537e+00 553 2017 3 2.03586e+01 9.99465e-01 656 2017 4 2.22124e+01 7.75900e-01 578 2017 5 2.45004e+01 1.39266e+00 663 2017 6 2.68491e+01 1.27207e+00 297 2017 7 2.95856e+01 1.18934e+00 602 2017 8 2.94085e+01 1.62525e+00 509 2017 9 2.83326e+01 1.20301e+00 591 2017 10 2.69931e+01 7.97271e-01 723 2017 11 2.43129e+01 8.98717e-01 712 2017 12 2.21500e+01 9.16509e-01 340 2018 1 1.96665e+01 1.40792e+00 544 2018 2 2.12789e+01 1.25863e+00 448 2018 3 2.11726e+01 1.24183e+00 687 2018 4 2.15434e+01 9.22074e-01 605 2018 5 2.51097e+01 1.74280e+00 685 2018 6 2.86689e+01 1.74528e+00 571 2018 7 2.96675e+01 1.11413e+00 626 2018 8 2.92510e+01 1.20446e+00 556 2018 9 2.97901e+01 7.19259e-01 741 2018 10 2.78409e+01 1.49333e+00 804 2018 11 2.43601e+01 1.46071e+00 267 2018 12 2.16327e+01 1.52395e+00 297 2019 1 1.97993e+01 1.28707e+00 570 2019 2 1.93613e+01 1.36861e+00 282 2019 3 1.94296e+01 8.04675e-01 498 2019 4 2.09021e+01 1.28300e+00 437 2019 5 2.59147e+01 1.91089e+00 803 2019 6 2.88534e+01 1.19328e+00 525 2019 7 2.92922e+01 1.41830e+00 479 2019 8 2.98289e+01 9.29782e-01 481 2019 9 2.95061e+01 9.25619e-01 895 2019 10 2.81208e+01 8.79089e-01 498 2019 11 2.48409e+01 1.53949e+00 547 2019 12 2.22262e+01 8.13034e-01 264 2020 1 2.16314e+01 9.93351e-01 538 2020 2 2.04288e+01 7.48309e-01 369 2020 3 2.21859e+01 1.77825e+00 570 2020 4 2.27583e+01 9.25285e-01 442 2020 5 2.41300e+01 1.33437e+00 779 2020 6 2.79320e+01 1.25383e+00 520 2020 7 2.91808e+01 8.66723e-01 498 2020 8 3.00419e+01 7.86723e-01 457 2020 9 2.89753e+01 1.35214e+00 419 2020 10 2.58112e+01 1.02027e+00 666 2020 11 2.44652e+01 1.33610e+00 681 2020 12 2.18311e+01 1.24267e+00 606 2021 1 1.99587e+01 9.67966e-01 414 2021 2 1.96308e+01 9.18689e-01 400 2021 3 2.02327e+01 8.66774e-01 500 2021 4 2.15731e+01 8.02349e-01 659 2021 5 2.37338e+01 1.18444e+00 730 2021 6 2.70166e+01 1.19553e+00 370 2021 7 2.93174e+01 1.10168e+00 543 2021 8 2.99750e+01 1.06259e+00 457 2021 9 2.82571e+01 8.09935e-01 496 2021 10 2.74559e+01 8.54318e-01 382 2021 11 2.37893e+01 1.20142e+00 703 2021 12 2.18844e+01 5.23772e-01 555 2022 1 2.13493e+01 1.28445e+00 579 2022 2 2.00507e+01 8.82830e-01 580 2022 3 2.04499e+01 6.66554e-01 737 2022 4 2.21114e+01 1.30167e+00 389 2022 5 2.54132e+01 9.28154e-01 647 2022 6 2.87258e+01 1.46134e+00 742 2022 7 2.97382e+01 1.07908e+00 616 2022 8 3.01024e+01 1.05852e+00 434 2022 9 2.95463e+01 9.22550e-01 575 2022 10 2.63920e+01 1.20370e+00 754 2022 11 2.44641e+01 9.53289e-01 421 2022 12 2.32774e+01 1.29440e+00 537 2023 1 2.18108e+01 1.14675e+00 619 2023 2 2.09312e+01 8.25048e-01 616 2023 3 2.14552e+01 7.65474e-01 661 2023 4 2.20063e+01 9.02448e-01 508 2023 5 2.45226e+01 1.65490e+00 720 2023 6 2.69510e+01 1.86886e+00 579 2023 7 3.01948e+01 1.09174e+00 524 2023 8 3.12610e+01 7.42378e-01 782 2023 9 3.04569e+01 8.28125e-01 571 2023 10 2.64386e+01 1.43054e+00 580 2023 11 2.45090e+01 8.80962e-01 496 2023 12 2.15312e+01 1.21470e+00 275 2024 1 2.01833e+01 1.24202e+00 351 2024 2 1.93720e+01 7.77244e-01 474 2024 3 2.04026e+01 1.00254e+00 407 2024 4 2.14594e+01 5.45236e-01 17