YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.72648e+01 1.87931e-01 32 2000 3 1.95191e+01 1.33789e+00 160 2000 4 2.10891e+01 1.04848e+00 144 2000 5 2.46094e+01 1.87561e+00 192 2000 6 2.68857e+01 1.05324e+00 109 2000 7 2.91340e+01 8.65432e-01 140 2000 8 2.90110e+01 1.23212e+00 68 2000 9 2.75755e+01 7.70798e-01 96 2000 10 2.45095e+01 9.60117e-01 223 2000 11 2.29318e+01 1.21676e+00 160 2000 12 1.76995e+01 1.53882e+00 144 2001 1 1.58371e+01 1.01944e+00 97 2001 2 1.67229e+01 8.67528e-01 87 2001 3 1.74020e+01 2.12172e+00 136 2001 4 2.00287e+01 1.74158e+00 199 2001 5 2.36059e+01 1.41865e+00 197 2001 6 2.55345e+01 7.64542e-01 64 2001 7 2.78929e+01 1.33478e+00 83 2001 8 2.80947e+01 1.37331e+00 160 2001 9 2.81846e+01 9.32371e-01 121 2001 10 2.46427e+01 1.46830e+00 144 2001 11 2.13873e+01 3.85532e-01 224 2001 12 2.09211e+01 8.89706e-01 180 2002 1 1.79563e+01 1.12072e+00 42 2002 2 1.69230e+01 6.43771e-01 109 2002 3 1.87795e+01 7.24752e-01 32 2002 4 2.22965e+01 1.92897e+00 171 2002 5 2.57220e+01 1.01720e+00 169 2002 6 2.69185e+01 7.28609e-01 127 2002 7 2.85193e+01 1.55963e+00 461 2002 8 2.91219e+01 5.36489e-01 567 2002 9 2.86638e+01 8.38019e-01 433 2002 10 2.76260e+01 1.39139e+00 582 2002 11 2.33459e+01 2.05835e+00 561 2002 12 1.79277e+01 1.31778e+00 397 2003 1 1.53081e+01 1.44512e+00 623 2003 2 1.54131e+01 9.65357e-01 290 2003 3 1.87571e+01 1.39975e+00 273 2003 4 2.04803e+01 1.34266e+00 611 2003 5 2.57523e+01 1.21567e+00 641 2003 6 2.74822e+01 1.54501e+00 499 2003 7 2.88949e+01 1.32597e+00 396 2003 8 2.83956e+01 1.08456e+00 487 2003 9 2.87388e+01 6.90724e-01 519 2003 10 2.50807e+01 9.71411e-01 696 2003 11 2.30496e+01 1.10141e+00 800 2003 12 1.84044e+01 1.93329e+00 509 2004 1 1.54591e+01 9.16599e-01 445 2004 2 1.45250e+01 1.32358e+00 223 2004 3 1.76326e+01 1.31994e+00 523 2004 4 1.98652e+01 1.39190e+00 604 2004 5 2.47855e+01 2.08820e+00 928 2004 6 2.80484e+01 1.17576e+00 636 2004 7 2.89854e+01 1.52206e+00 636 2004 8 2.94785e+01 1.06732e+00 622 2004 9 2.78391e+01 1.52067e+00 484 2004 10 2.54344e+01 1.33488e+00 693 2004 11 2.37178e+01 1.69485e+00 600 2004 12 1.88367e+01 1.59589e+00 565 2005 1 1.62408e+01 1.37590e+00 411 2005 2 1.56930e+01 1.23785e+00 422 2005 3 1.70841e+01 9.69394e-01 498 2005 4 2.00246e+01 7.98452e-01 628 2005 5 2.40002e+01 2.08841e+00 820 2005 6 2.73418e+01 1.33934e+00 661 2005 7 2.93751e+01 1.46266e+00 630 2005 8 2.97131e+01 1.54882e+00 575 2005 9 2.82577e+01 1.53182e+00 786 2005 10 2.64666e+01 1.19565e+00 743 2005 11 2.24332e+01 1.45951e+00 625 2005 12 1.79464e+01 1.65323e+00 510 2006 1 1.66472e+01 7.51206e-01 423 2006 2 1.61738e+01 1.17047e+00 485 2006 3 1.80526e+01 1.09836e+00 652 2006 4 2.15749e+01 1.97348e+00 721 2006 5 2.40427e+01 1.19466e+00 813 2006 6 2.74545e+01 1.44511e+00 768 2006 7 2.96147e+01 1.11395e+00 610 2006 8 3.00999e+01 1.03729e+00 687 2006 9 2.93188e+01 8.67997e-01 557 2006 10 2.67577e+01 1.47383e+00 810 2006 11 2.13107e+01 1.93736e+00 721 2006 12 1.80862e+01 8.60382e-01 368 2007 1 1.67942e+01 1.30054e+00 255 2007 2 1.61523e+01 8.25450e-01 382 2007 3 1.80588e+01 7.49126e-01 565 2007 4 2.01748e+01 1.26204e+00 596 2007 5 2.30667e+01 9.45956e-01 869 2007 6 2.65728e+01 1.45959e+00 616 2007 7 2.90069e+01 1.22213e+00 542 2007 8 3.01168e+01 8.74527e-01 623 2007 9 2.90612e+01 1.27717e+00 505 2007 10 2.70277e+01 8.12455e-01 514 2007 11 2.25803e+01 1.02216e+00 869 2007 12 2.03677e+01 6.24004e-01 443 2008 1 1.77378e+01 1.19662e+00 455 2008 2 1.73386e+01 1.04074e+00 517 2008 3 1.81851e+01 1.01504e+00 582 2008 4 2.08453e+01 1.22281e+00 694 2008 5 2.36174e+01 1.34681e+00 631 2008 6 2.79654e+01 1.17135e+00 678 2008 7 2.88065e+01 1.08518e+00 501 2008 8 2.81717e+01 1.04936e+00 481 2008 9 2.78848e+01 1.08142e+00 571 2008 10 2.54276e+01 1.13006e+00 896 2008 11 2.08305e+01 1.31012e+00 583 2008 12 1.75499e+01 7.13450e-01 530 2009 1 1.71424e+01 1.00364e+00 622 2009 2 1.59580e+01 1.02651e+00 623 2009 3 1.76041e+01 1.40403e+00 614 2009 4 2.10265e+01 1.32559e+00 581 2009 5 2.47275e+01 1.04567e+00 623 2009 6 2.67301e+01 1.27618e+00 809 2009 7 2.80026e+01 8.46114e-01 598 2009 8 2.92017e+01 1.08129e+00 460 2009 9 2.83808e+01 8.04054e-01 488 2009 10 2.67497e+01 1.72821e+00 652 2009 11 2.19726e+01 1.47995e+00 462 2009 12 1.74468e+01 1.73426e+00 175 2010 1 1.50527e+01 1.50238e+00 455 2010 2 1.42533e+01 1.00689e+00 480 2010 3 1.53708e+01 1.22521e+00 523 2010 4 2.00241e+01 1.36539e+00 552 2010 5 2.64963e+01 2.10678e+00 713 2010 6 2.97075e+01 1.16902e+00 716 2010 7 2.93258e+01 1.08346e+00 552 2010 8 2.92361e+01 1.28179e+00 339 2010 9 2.91506e+01 9.64945e-01 797 2010 10 2.58477e+01 1.17013e+00 1039 2010 11 2.22684e+01 1.26539e+00 802 2010 12 1.77315e+01 2.41318e+00 782 2011 1 1.40519e+01 6.46150e-01 497 2011 2 1.47748e+01 9.46848e-01 266 2011 3 1.79832e+01 1.46587e+00 567 2011 4 2.19473e+01 1.49909e+00 824 2011 5 2.47190e+01 1.31898e+00 1016 2011 6 2.84117e+01 1.30023e+00 743 2011 7 2.95857e+01 1.08114e+00 486 2011 8 2.97478e+01 9.36740e-01 793 2011 9 2.84776e+01 5.43411e-01 642 2011 10 2.60663e+01 1.61652e+00 845 2011 11 2.17148e+01 9.85652e-01 752 2011 12 1.85343e+01 9.30961e-01 497 2012 1 1.74878e+01 1.02973e+00 570 2012 2 1.72998e+01 1.21013e+00 183 2012 3 1.99555e+01 1.67737e+00 651 2012 4 2.25978e+01 1.15342e+00 802 2012 5 2.56258e+01 1.13896e+00 838 2012 6 2.70189e+01 7.74294e-01 606 2012 7 2.85066e+01 1.21685e+00 518 2012 8 2.85688e+01 1.27609e+00 442 2012 9 2.79794e+01 1.18451e+00 619 2012 10 2.61832e+01 1.33331e+00 759 2012 11 2.08068e+01 1.31153e+00 692 2012 12 1.93295e+01 1.17056e+00 443 2013 1 1.77494e+01 1.09921e+00 439 2013 2 1.80767e+01 6.83253e-01 462 2013 3 1.74402e+01 1.04081e+00 590 2013 4 1.95424e+01 1.06999e+00 403 2013 5 2.34738e+01 1.49892e+00 626 2013 6 2.69832e+01 1.73464e+00 614 2013 7 2.81508e+01 1.33908e+00 309 2013 8 2.92634e+01 1.47767e+00 526 2013 9 2.94213e+01 1.07697e+00 655 2013 10 2.64907e+01 9.53811e-01 621 2013 11 2.17785e+01 2.14684e+00 376 2013 12 1.87985e+01 1.35631e+00 463 2014 1 1.59684e+01 8.95998e-01 349 2014 2 1.54301e+01 8.73197e-01 261 2014 3 1.70453e+01 8.23508e-01 535 2014 4 2.01228e+01 1.79340e+00 516 2014 5 2.45051e+01 1.40527e+00 622 2014 6 2.77603e+01 1.52070e+00 648 2014 7 2.85583e+01 1.12344e+00 685 2014 8 2.91650e+01 1.26199e+00 829 2014 9 2.91196e+01 1.23797e+00 381 2014 10 2.64296e+01 1.19358e+00 843 2014 11 2.17401e+01 1.92320e+00 614 2014 12 1.80097e+01 7.83649e-01 516 2015 1 1.57975e+01 1.01004e+00 448 2015 2 1.62247e+01 8.63692e-01 543 2015 3 1.78335e+01 1.89424e+00 321 2015 4 2.17273e+01 1.96493e+00 343 2015 5 2.56024e+01 1.60073e+00 834 2015 6 2.88398e+01 1.37132e+00 600 2015 7 2.88650e+01 1.47553e+00 504 2015 8 3.03987e+01 1.07034e+00 552 2015 9 2.87317e+01 9.10020e-01 296 2015 10 2.53652e+01 1.26595e+00 644 2015 11 2.32144e+01 1.67733e+00 622 2015 12 2.03715e+01 1.09734e+00 396 2016 1 1.74534e+01 1.45881e+00 437 2016 2 1.66813e+01 1.12027e+00 521 2016 3 1.86255e+01 1.34315e+00 447 2016 4 2.13830e+01 1.38188e+00 524 2016 5 2.44525e+01 1.33393e+00 686 2016 6 2.80145e+01 1.34889e+00 750 2016 7 3.01710e+01 1.11505e+00 758 2016 8 2.99278e+01 1.22821e+00 631 2016 9 2.92861e+01 9.87130e-01 649 2016 10 2.62927e+01 1.59825e+00 849 2016 11 2.28728e+01 1.45866e+00 673 2016 12 2.01991e+01 9.40203e-01 501 2017 1 1.87335e+01 9.94423e-01 506 2017 2 1.84055e+01 1.18535e+00 627 2017 3 1.93265e+01 1.06399e+00 671 2017 4 2.22047e+01 9.77945e-01 635 2017 5 2.44796e+01 1.20964e+00 584 2017 6 2.81104e+01 1.40545e+00 343 2017 7 2.98847e+01 1.33726e+00 575 2017 8 2.96457e+01 1.34297e+00 478 2017 9 2.80990e+01 1.31645e+00 578 2017 10 2.62308e+01 1.04083e+00 801 2017 11 2.26953e+01 1.11852e+00 740 2017 12 1.94325e+01 1.55685e+00 425 2018 1 1.57332e+01 9.05941e-01 497 2018 2 1.66559e+01 1.72609e+00 244 2018 3 1.89106e+01 9.26952e-01 752 2018 4 2.06104e+01 1.34763e+00 628 2018 5 2.44567e+01 1.83934e+00 660 2018 6 2.81604e+01 1.29833e+00 616 2018 7 2.93485e+01 1.13648e+00 567 2018 8 2.91937e+01 1.14475e+00 595 2018 9 3.00713e+01 8.37234e-01 754 2018 10 2.75117e+01 1.60503e+00 754 2018 11 2.27961e+01 1.71980e+00 378 2018 12 1.83660e+01 1.86296e+00 400 2019 1 1.73082e+01 1.03091e+00 558 2019 2 1.61377e+01 1.57809e+00 225 2019 3 1.81835e+01 1.29102e+00 521 2019 4 2.11205e+01 1.47295e+00 588 2019 5 2.61166e+01 2.27134e+00 963 2019 6 2.85178e+01 1.57760e+00 499 2019 7 2.95212e+01 1.40536e+00 495 2019 8 2.99822e+01 8.84896e-01 512 2019 9 2.94015e+01 7.96370e-01 965 2019 10 2.76948e+01 1.28952e+00 623 2019 11 2.24319e+01 1.98189e+00 629 2019 12 1.87087e+01 1.26427e+00 476 2020 1 1.76930e+01 7.64519e-01 512 2020 2 1.74788e+01 8.25888e-01 480 2020 3 2.10704e+01 2.26022e+00 685 2020 4 2.22174e+01 8.78946e-01 441 2020 5 2.41111e+01 1.32573e+00 714 2020 6 2.86037e+01 1.15929e+00 455 2020 7 2.85334e+01 1.16385e+00 503 2020 8 3.01686e+01 8.18858e-01 452 2020 9 2.86244e+01 1.31170e+00 470 2020 10 2.56743e+01 8.50933e-01 645 2020 11 2.35694e+01 1.31341e+00 843 2020 12 1.92576e+01 1.46362e+00 761 2021 1 1.68197e+01 9.59247e-01 406 2021 2 1.62671e+01 9.40182e-01 405 2021 3 1.78878e+01 1.23755e+00 567 2021 4 2.07137e+01 1.28535e+00 685 2021 5 2.42541e+01 1.53056e+00 779 2021 6 2.70961e+01 1.07998e+00 464 2021 7 2.90601e+01 1.37367e+00 424 2021 8 3.00216e+01 1.01734e+00 434 2021 9 2.84053e+01 8.71372e-01 537 2021 10 2.64956e+01 1.13643e+00 507 2021 11 2.24384e+01 1.39427e+00 732 2021 12 1.95279e+01 5.95472e-01 575 2022 1 1.79115e+01 1.43866e+00 612 2022 2 1.68780e+01 1.07848e+00 608 2022 3 1.90107e+01 8.02489e-01 761 2022 4 2.17727e+01 8.38668e-01 484 2022 5 2.52174e+01 1.48883e+00 700 2022 6 2.90500e+01 1.59677e+00 593 2022 7 3.02262e+01 1.13085e+00 519 2022 8 3.03378e+01 1.13962e+00 360 2022 9 2.91358e+01 1.20345e+00 511 2022 10 2.61213e+01 1.48878e+00 784 2022 11 2.28336e+01 1.25009e+00 466 2022 12 1.98270e+01 1.91203e+00 695 2023 1 1.86350e+01 1.33339e+00 721 2023 2 1.84378e+01 9.43617e-01 511 2023 3 2.07089e+01 9.23775e-01 642 2023 4 2.19638e+01 8.09171e-01 562 2023 5 2.48377e+01 1.62648e+00 661 2023 6 2.69244e+01 1.28284e+00 609 2023 7 2.90927e+01 1.24329e+00 579 2023 8 3.08602e+01 1.01272e+00 652 2023 9 3.03238e+01 1.10085e+00 651 2023 10 2.58719e+01 1.14157e+00 761 2023 11 2.31626e+01 1.23345e+00 554 2023 12 1.74302e+01 1.14920e+00 303 2024 1 1.58546e+01 1.00611e+00 324 2024 2 1.61020e+01 1.00545e+00 497 2024 3 1.85354e+01 9.68899e-01 453 2024 4 2.06588e+01 5.17660e-02 16