YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.96170e+01 1.90114e-01 20 2000 3 2.03200e+01 6.37520e-01 139 2000 4 2.15441e+01 4.23988e-01 144 2000 5 2.49179e+01 1.90672e+00 201 2000 6 2.77552e+01 8.14461e-01 120 2000 7 2.95119e+01 1.07352e+00 137 2000 8 2.86326e+01 1.79758e+00 56 2000 9 2.81070e+01 1.54994e+00 96 2000 10 2.53980e+01 1.01812e+00 272 2000 11 2.37224e+01 8.73365e-01 131 2000 12 1.99632e+01 1.09763e+00 144 2001 1 1.80289e+01 4.95394e-01 90 2001 2 1.85179e+01 6.92686e-01 64 2001 3 1.85836e+01 1.59811e+00 112 2001 4 2.02476e+01 1.94546e+00 134 2001 5 2.34219e+01 1.23207e+00 256 2001 6 2.67459e+01 1.00161e+00 64 2001 7 2.84803e+01 8.56587e-01 59 2001 8 2.78350e+01 9.44393e-01 176 2001 9 2.84956e+01 9.84535e-01 182 2001 10 2.54018e+01 1.15292e+00 225 2001 11 2.28734e+01 6.61529e-01 240 2001 12 2.24144e+01 1.75766e+00 141 2002 1 1.96089e+01 1.20494e+00 96 2002 2 1.76677e+01 2.34631e+00 69 2002 3 1.86756e+01 1.58901e+00 71 2002 4 2.23521e+01 1.67388e+00 100 2002 5 2.53549e+01 9.81747e-01 222 2002 6 2.65358e+01 9.65011e-01 196 2002 7 2.86118e+01 1.38651e+00 570 2002 8 2.91337e+01 7.10555e-01 480 2002 9 2.85456e+01 1.25344e+00 428 2002 10 2.78033e+01 1.35256e+00 534 2002 11 2.42449e+01 1.94589e+00 496 2002 12 1.95449e+01 1.28299e+00 467 2003 1 1.79814e+01 1.14287e+00 649 2003 2 1.72194e+01 1.00589e+00 339 2003 3 1.89131e+01 1.32272e+00 214 2003 4 2.04631e+01 1.34773e+00 554 2003 5 2.51385e+01 1.17229e+00 554 2003 6 2.79420e+01 1.41240e+00 371 2003 7 2.86968e+01 8.05331e-01 379 2003 8 2.85216e+01 1.29030e+00 516 2003 9 2.85763e+01 6.03994e-01 576 2003 10 2.55841e+01 9.13922e-01 697 2003 11 2.42252e+01 1.21635e+00 757 2003 12 2.07342e+01 1.73089e+00 473 2004 1 1.85271e+01 1.29784e+00 446 2004 2 1.77820e+01 1.20650e+00 197 2004 3 1.86842e+01 1.14853e+00 605 2004 4 1.98481e+01 1.07135e+00 527 2004 5 2.40606e+01 1.90332e+00 915 2004 6 2.80611e+01 1.50267e+00 632 2004 7 2.95337e+01 1.15814e+00 554 2004 8 2.95176e+01 1.31617e+00 673 2004 9 2.76491e+01 1.75034e+00 541 2004 10 2.53165e+01 1.06866e+00 602 2004 11 2.40496e+01 1.40039e+00 500 2004 12 2.02940e+01 1.35077e+00 400 2005 1 1.90003e+01 1.25029e+00 556 2005 2 1.77925e+01 1.04723e+00 457 2005 3 1.82148e+01 9.28894e-01 411 2005 4 1.99535e+01 1.23185e+00 597 2005 5 2.35756e+01 1.96447e+00 731 2005 6 2.71537e+01 1.39048e+00 712 2005 7 2.85931e+01 1.69629e+00 583 2005 8 2.93677e+01 1.44916e+00 564 2005 9 2.87142e+01 1.06201e+00 739 2005 10 2.67099e+01 1.28815e+00 799 2005 11 2.34377e+01 8.85449e-01 616 2005 12 1.97858e+01 1.36368e+00 462 2006 1 1.88563e+01 8.86772e-01 501 2006 2 1.82232e+01 1.09923e+00 436 2006 3 1.95580e+01 9.54672e-01 803 2006 4 2.19258e+01 1.96032e+00 699 2006 5 2.45268e+01 1.45296e+00 738 2006 6 2.80886e+01 1.31200e+00 771 2006 7 2.95691e+01 1.22514e+00 597 2006 8 3.02355e+01 1.31883e+00 613 2006 9 2.95456e+01 9.21747e-01 564 2006 10 2.73720e+01 1.30341e+00 629 2006 11 2.20612e+01 1.91474e+00 686 2006 12 1.99500e+01 1.04912e+00 410 2007 1 1.93995e+01 7.40169e-01 180 2007 2 1.81593e+01 8.17733e-01 409 2007 3 1.84410e+01 1.00738e+00 654 2007 4 2.05813e+01 1.58122e+00 571 2007 5 2.33597e+01 8.65900e-01 782 2007 6 2.66921e+01 1.72707e+00 573 2007 7 2.92659e+01 1.08735e+00 433 2007 8 2.96468e+01 1.38012e+00 715 2007 9 2.89981e+01 9.49901e-01 561 2007 10 2.73303e+01 9.29771e-01 494 2007 11 2.34544e+01 1.20430e+00 804 2007 12 2.14033e+01 8.71215e-01 526 2008 1 1.94542e+01 1.37708e+00 510 2008 2 1.92515e+01 1.01317e+00 572 2008 3 1.85766e+01 9.90815e-01 543 2008 4 2.10706e+01 1.20137e+00 617 2008 5 2.36712e+01 1.63981e+00 648 2008 6 2.85663e+01 1.63899e+00 704 2008 7 2.90958e+01 1.35079e+00 556 2008 8 2.81865e+01 1.24541e+00 440 2008 9 2.76749e+01 9.63014e-01 585 2008 10 2.59268e+01 9.93746e-01 808 2008 11 2.27326e+01 1.34535e+00 778 2008 12 2.04928e+01 1.03956e+00 410 2009 1 1.93597e+01 1.04791e+00 509 2009 2 1.82934e+01 8.94378e-01 521 2009 3 1.95532e+01 1.23971e+00 587 2009 4 2.04202e+01 1.21921e+00 651 2009 5 2.46209e+01 1.64232e+00 614 2009 6 2.75077e+01 1.68601e+00 854 2009 7 2.83746e+01 1.16047e+00 533 2009 8 2.92599e+01 8.38216e-01 479 2009 9 2.82954e+01 9.71551e-01 545 2009 10 2.64676e+01 1.50844e+00 580 2009 11 2.28197e+01 1.20252e+00 374 2009 12 1.84575e+01 8.54401e-01 157 2010 1 1.82164e+01 1.21566e+00 391 2010 2 1.64487e+01 1.06358e+00 350 2010 3 1.69298e+01 1.12670e+00 452 2010 4 1.95730e+01 1.36116e+00 580 2010 5 2.49663e+01 2.36206e+00 757 2010 6 2.97885e+01 1.45919e+00 820 2010 7 2.91541e+01 1.18836e+00 612 2010 8 2.97667e+01 1.60168e+00 379 2010 9 2.90390e+01 1.05852e+00 765 2010 10 2.58365e+01 1.07789e+00 972 2010 11 2.28170e+01 9.60661e-01 827 2010 12 1.94912e+01 1.75041e+00 674 2011 1 1.67446e+01 9.92560e-01 521 2011 2 1.66358e+01 1.02794e+00 384 2011 3 1.92798e+01 1.07859e+00 577 2011 4 2.16469e+01 1.30541e+00 564 2011 5 2.45874e+01 1.34744e+00 920 2011 6 2.90642e+01 1.07063e+00 757 2011 7 2.99600e+01 1.03453e+00 508 2011 8 3.04030e+01 1.29322e+00 909 2011 9 2.85345e+01 6.66541e-01 703 2011 10 2.57846e+01 1.54280e+00 770 2011 11 2.27994e+01 7.93142e-01 652 2011 12 2.08165e+01 1.13674e+00 519 2012 1 1.93170e+01 1.15506e+00 636 2012 2 1.78351e+01 1.80900e+00 108 2012 3 2.09385e+01 1.50793e+00 611 2012 4 2.27237e+01 6.90644e-01 819 2012 5 2.54084e+01 1.56157e+00 869 2012 6 2.70432e+01 6.97285e-01 471 2012 7 2.83552e+01 1.08813e+00 504 2012 8 2.88393e+01 1.05444e+00 490 2012 9 2.77184e+01 9.56307e-01 641 2012 10 2.61729e+01 1.36471e+00 809 2012 11 2.21671e+01 7.88699e-01 669 2012 12 2.12509e+01 1.29443e+00 412 2013 1 1.97847e+01 8.44955e-01 406 2013 2 1.93249e+01 1.04833e+00 375 2013 3 1.82922e+01 8.84109e-01 617 2013 4 2.00262e+01 8.93426e-01 421 2013 5 2.33941e+01 1.54685e+00 644 2013 6 2.73649e+01 1.68641e+00 658 2013 7 2.78228e+01 1.33492e+00 293 2013 8 2.90563e+01 1.38900e+00 585 2013 9 2.93890e+01 1.07557e+00 811 2013 10 2.69872e+01 1.04659e+00 606 2013 11 2.30720e+01 1.88663e+00 391 2013 12 2.11926e+01 1.39609e+00 530 2014 1 1.79926e+01 1.41106e+00 368 2014 2 1.78652e+01 1.10480e+00 396 2014 3 1.77875e+01 1.01381e+00 473 2014 4 1.99464e+01 1.63092e+00 508 2014 5 2.38076e+01 1.59636e+00 641 2014 6 2.78644e+01 1.79567e+00 631 2014 7 2.89232e+01 1.11558e+00 640 2014 8 2.97241e+01 9.80962e-01 654 2014 9 2.96592e+01 1.12353e+00 686 2014 10 2.70596e+01 1.15700e+00 846 2014 11 2.20766e+01 1.71635e+00 604 2014 12 2.14270e+01 1.01456e+00 602 2015 1 1.96519e+01 1.38499e+00 429 2015 2 1.85846e+01 1.00496e+00 498 2015 3 1.96676e+01 1.03153e+00 487 2015 4 2.19085e+01 1.80807e+00 268 2015 5 2.51513e+01 1.75636e+00 860 2015 6 2.83961e+01 1.41245e+00 771 2015 7 2.91676e+01 1.41269e+00 658 2015 8 2.96029e+01 9.90699e-01 683 2015 9 2.88440e+01 9.77388e-01 428 2015 10 2.63485e+01 5.83696e-01 642 2015 11 2.47508e+01 1.71777e+00 652 2015 12 2.20018e+01 9.77388e-01 389 2016 1 1.99142e+01 1.79313e+00 372 2016 2 1.85018e+01 1.08528e+00 532 2016 3 1.86827e+01 1.22441e+00 382 2016 4 2.08373e+01 1.19760e+00 584 2016 5 2.44319e+01 1.45343e+00 636 2016 6 2.82439e+01 1.23793e+00 655 2016 7 3.05113e+01 8.73248e-01 688 2016 8 2.90938e+01 1.40624e+00 478 2016 9 2.94541e+01 7.05148e-01 563 2016 10 2.71190e+01 1.19756e+00 800 2016 11 2.43402e+01 1.16181e+00 710 2016 12 2.15027e+01 1.28528e+00 599 2017 1 2.05279e+01 1.07224e+00 494 2017 2 1.94427e+01 9.72628e-01 537 2017 3 1.98682e+01 1.06937e+00 635 2017 4 2.19207e+01 7.82785e-01 595 2017 5 2.45178e+01 1.33826e+00 606 2017 6 2.65115e+01 1.64655e+00 329 2017 7 2.96292e+01 1.17649e+00 553 2017 8 3.00547e+01 9.85754e-01 503 2017 9 2.81005e+01 1.35246e+00 597 2017 10 2.68935e+01 7.74762e-01 734 2017 11 2.36829e+01 1.43194e+00 687 2017 12 2.09275e+01 1.27899e+00 349 2018 1 1.87113e+01 1.28145e+00 557 2018 2 2.06067e+01 1.54528e+00 467 2018 3 2.05171e+01 1.33908e+00 630 2018 4 2.09611e+01 7.63065e-01 676 2018 5 2.49684e+01 1.86528e+00 705 2018 6 2.83098e+01 1.74981e+00 554 2018 7 2.94573e+01 1.12878e+00 621 2018 8 2.91327e+01 1.34026e+00 598 2018 9 2.97047e+01 1.22523e+00 659 2018 10 2.79097e+01 1.55060e+00 791 2018 11 2.29705e+01 1.55639e+00 341 2018 12 2.08756e+01 1.55517e+00 284 2019 1 1.89360e+01 1.34257e+00 506 2019 2 1.88273e+01 1.40145e+00 211 2019 3 1.88359e+01 7.85825e-01 562 2019 4 2.06127e+01 1.73346e+00 490 2019 5 2.55868e+01 2.07113e+00 824 2019 6 2.86153e+01 1.30952e+00 430 2019 7 2.95469e+01 1.49900e+00 507 2019 8 2.97597e+01 7.64856e-01 450 2019 9 2.94867e+01 8.69128e-01 837 2019 10 2.80870e+01 9.88380e-01 578 2019 11 2.41465e+01 1.79353e+00 572 2019 12 2.16389e+01 1.08009e+00 320 2020 1 2.03867e+01 1.22377e+00 605 2020 2 1.96052e+01 8.95713e-01 416 2020 3 2.14085e+01 1.99126e+00 563 2020 4 2.28628e+01 7.48278e-01 417 2020 5 2.39167e+01 1.29869e+00 698 2020 6 2.78486e+01 1.10673e+00 553 2020 7 2.91904e+01 1.01172e+00 535 2020 8 3.01928e+01 7.79441e-01 447 2020 9 2.89109e+01 1.68964e+00 420 2020 10 2.57572e+01 7.79809e-01 653 2020 11 2.40384e+01 1.21145e+00 749 2020 12 2.12048e+01 1.25661e+00 686 2021 1 1.96651e+01 1.10899e+00 358 2021 2 1.86000e+01 6.33826e-01 369 2021 3 1.94908e+01 8.91228e-01 513 2021 4 2.08355e+01 9.24847e-01 613 2021 5 2.36745e+01 1.17033e+00 684 2021 6 2.70736e+01 1.03881e+00 410 2021 7 2.91504e+01 1.18298e+00 502 2021 8 2.98830e+01 1.21627e+00 507 2021 9 2.82295e+01 9.28420e-01 502 2021 10 2.71182e+01 1.00952e+00 442 2021 11 2.28639e+01 1.16441e+00 719 2021 12 2.08013e+01 7.06844e-01 562 2022 1 1.98720e+01 1.47218e+00 544 2022 2 1.94771e+01 9.33363e-01 535 2022 3 1.99260e+01 7.54982e-01 706 2022 4 2.15720e+01 6.87475e-01 404 2022 5 2.51245e+01 1.05416e+00 738 2022 6 2.86668e+01 1.49215e+00 716 2022 7 2.99788e+01 1.07199e+00 574 2022 8 3.03997e+01 8.66484e-01 487 2022 9 2.93508e+01 9.12781e-01 566 2022 10 2.62122e+01 1.18017e+00 713 2022 11 2.41168e+01 1.05005e+00 400 2022 12 2.26584e+01 1.49339e+00 596 2023 1 2.10074e+01 1.15527e+00 624 2023 2 2.01931e+01 1.07181e+00 597 2023 3 2.11877e+01 8.72589e-01 656 2023 4 2.19143e+01 9.13025e-01 471 2023 5 2.46156e+01 1.75204e+00 639 2023 6 2.70917e+01 1.78454e+00 587 2023 7 2.97693e+01 1.23601e+00 545 2023 8 3.10847e+01 8.40364e-01 669 2023 9 3.04321e+01 8.44087e-01 649 2023 10 2.60867e+01 1.62465e+00 674 2023 11 2.38969e+01 8.86822e-01 462 2023 12 2.07503e+01 1.38251e+00 316 2024 1 1.89192e+01 1.36788e+00 348 2024 2 1.83068e+01 9.26527e-01 487 2024 3 2.00163e+01 1.16790e+00 342 2024 4 2.07723e+01 4.61633e-01 32