YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.90789e+01 1.73521e-01 28 2000 3 1.93839e+01 9.59959e-01 156 2000 4 2.10896e+01 5.59699e-01 140 2000 5 2.49343e+01 1.28154e+00 186 2000 6 2.74978e+01 8.41706e-01 144 2000 7 2.99700e+01 1.00070e+00 205 2000 8 2.94927e+01 6.50587e-01 64 2000 9 2.85203e+01 7.24606e-01 162 2000 10 2.55044e+01 1.07036e+00 238 2000 11 2.37228e+01 1.29931e+00 147 2000 12 2.00803e+01 1.25569e+00 130 2001 1 1.78218e+01 6.98132e-01 98 2001 2 1.72271e+01 8.37887e-01 51 2001 3 1.81286e+01 8.91103e-01 104 2001 4 2.08159e+01 2.03033e+00 150 2001 5 2.40119e+01 1.15265e+00 221 2001 6 2.59569e+01 4.80189e-01 48 2001 7 2.89347e+01 5.29755e-01 60 2001 8 2.83243e+01 8.99061e-01 152 2001 9 2.84869e+01 1.14376e+00 208 2001 10 2.47046e+01 1.34454e+00 256 2001 11 2.26600e+01 7.51970e-01 244 2001 12 2.14039e+01 1.15024e+00 199 2002 1 1.86563e+01 5.79737e-01 67 2002 2 1.81591e+01 1.26979e+00 94 2002 3 1.81948e+01 8.90601e-01 96 2002 4 2.12235e+01 1.73196e+00 115 2002 5 2.50029e+01 1.39497e+00 261 2002 6 2.67309e+01 6.89197e-01 180 2002 7 2.93508e+01 1.12504e+00 559 2002 8 2.90939e+01 8.68395e-01 641 2002 9 2.84603e+01 1.05751e+00 479 2002 10 2.76798e+01 1.15279e+00 504 2002 11 2.28458e+01 1.71930e+00 532 2002 12 1.83701e+01 1.45911e+00 436 2003 1 1.72548e+01 1.24584e+00 619 2003 2 1.64782e+01 1.02134e+00 303 2003 3 1.87125e+01 1.01427e+00 318 2003 4 2.04712e+01 1.71735e+00 511 2003 5 2.49280e+01 1.44805e+00 603 2003 6 2.73833e+01 1.49706e+00 481 2003 7 2.87716e+01 1.00145e+00 450 2003 8 2.86973e+01 1.07189e+00 618 2003 9 2.84933e+01 1.01349e+00 627 2003 10 2.53371e+01 1.22904e+00 640 2003 11 2.40744e+01 9.54678e-01 771 2003 12 1.91450e+01 1.71436e+00 435 2004 1 1.77910e+01 9.64233e-01 348 2004 2 1.60553e+01 1.20693e+00 212 2004 3 1.81417e+01 1.08404e+00 579 2004 4 1.96606e+01 1.62794e+00 425 2004 5 2.44835e+01 1.98616e+00 743 2004 6 2.73538e+01 1.66082e+00 507 2004 7 2.96697e+01 1.15497e+00 656 2004 8 2.90937e+01 1.18964e+00 586 2004 9 2.74554e+01 1.44022e+00 584 2004 10 2.51456e+01 1.22133e+00 658 2004 11 2.33188e+01 1.52324e+00 515 2004 12 1.98152e+01 1.17514e+00 486 2005 1 1.81912e+01 1.24168e+00 473 2005 2 1.80400e+01 7.75751e-01 262 2005 3 1.76082e+01 1.02013e+00 447 2005 4 2.03248e+01 1.19005e+00 596 2005 5 2.36348e+01 2.05237e+00 773 2005 6 2.70642e+01 1.41450e+00 795 2005 7 2.85893e+01 1.80495e+00 754 2005 8 2.95859e+01 1.09635e+00 536 2005 9 2.87696e+01 8.94284e-01 871 2005 10 2.66949e+01 1.32995e+00 1037 2005 11 2.26304e+01 1.41466e+00 579 2005 12 1.95057e+01 7.88953e-01 487 2006 1 1.79486e+01 1.16497e+00 465 2006 2 1.68835e+01 1.30199e+00 467 2006 3 1.83213e+01 1.01406e+00 566 2006 4 2.14421e+01 1.77194e+00 646 2006 5 2.40324e+01 1.38677e+00 717 2006 6 2.81164e+01 1.32112e+00 823 2006 7 2.92271e+01 1.58849e+00 586 2006 8 3.00289e+01 1.17967e+00 725 2006 9 2.93774e+01 8.99429e-01 640 2006 10 2.66091e+01 1.51037e+00 689 2006 11 2.16479e+01 2.05360e+00 679 2006 12 1.89735e+01 1.49666e+00 385 2007 1 1.84778e+01 9.94966e-01 287 2007 2 1.74698e+01 9.01912e-01 432 2007 3 1.74373e+01 1.14430e+00 616 2007 4 1.99016e+01 1.11476e+00 568 2007 5 2.32833e+01 8.39442e-01 785 2007 6 2.71699e+01 1.54184e+00 681 2007 7 2.84048e+01 1.37922e+00 500 2007 8 2.97105e+01 1.30791e+00 758 2007 9 2.91507e+01 1.06463e+00 664 2007 10 2.68886e+01 1.49989e+00 645 2007 11 2.29504e+01 1.44470e+00 749 2007 12 2.06389e+01 1.00454e+00 489 2008 1 1.86670e+01 1.28691e+00 452 2008 2 1.83646e+01 7.67613e-01 444 2008 3 1.77926e+01 9.80463e-01 534 2008 4 2.07296e+01 9.65034e-01 552 2008 5 2.41734e+01 2.40274e+00 614 2008 6 2.90838e+01 1.09322e+00 626 2008 7 2.89258e+01 1.15726e+00 629 2008 8 2.75723e+01 1.61141e+00 538 2008 9 2.75494e+01 1.05972e+00 701 2008 10 2.58039e+01 9.26612e-01 797 2008 11 2.29599e+01 1.27577e+00 865 2008 12 1.96653e+01 1.28803e+00 497 2009 1 1.80318e+01 1.25722e+00 528 2009 2 1.74876e+01 1.15537e+00 386 2009 3 1.86094e+01 1.43749e+00 527 2009 4 2.07274e+01 1.05399e+00 565 2009 5 2.48218e+01 1.32114e+00 643 2009 6 2.68805e+01 1.58471e+00 793 2009 7 2.79108e+01 1.27370e+00 616 2009 8 2.86942e+01 1.25183e+00 620 2009 9 2.84132e+01 8.42608e-01 568 2009 10 2.67224e+01 1.71127e+00 539 2009 11 2.19501e+01 1.45576e+00 580 2009 12 1.73684e+01 1.46843e+00 192 2010 1 1.70211e+01 1.59781e+00 426 2010 2 1.57810e+01 9.27951e-01 464 2010 3 1.66594e+01 8.10651e-01 469 2010 4 2.04829e+01 1.22633e+00 563 2010 5 2.55615e+01 2.41907e+00 671 2010 6 2.99893e+01 1.88061e+00 762 2010 7 2.95253e+01 1.27887e+00 748 2010 8 2.97940e+01 1.12052e+00 512 2010 9 2.92674e+01 7.71232e-01 740 2010 10 2.55967e+01 1.25152e+00 1027 2010 11 2.23088e+01 1.09773e+00 674 2010 12 1.85163e+01 1.82763e+00 724 2011 1 1.67725e+01 1.38892e+00 486 2011 2 1.59459e+01 1.15857e+00 338 2011 3 1.85620e+01 1.28154e+00 543 2011 4 2.19058e+01 1.56850e+00 684 2011 5 2.45837e+01 1.52928e+00 962 2011 6 2.88372e+01 1.39046e+00 929 2011 7 2.98585e+01 1.02633e+00 572 2011 8 3.02845e+01 8.75692e-01 714 2011 9 2.81390e+01 7.10547e-01 732 2011 10 2.54223e+01 1.50204e+00 895 2011 11 2.21299e+01 8.66329e-01 582 2011 12 2.00457e+01 1.36512e+00 405 2012 1 1.83236e+01 1.14121e+00 494 2012 2 1.71597e+01 1.05305e+00 131 2012 3 2.03301e+01 1.67329e+00 546 2012 4 2.22970e+01 7.75088e-01 862 2012 5 2.55538e+01 1.59457e+00 943 2012 6 2.69708e+01 8.15586e-01 585 2012 7 2.82716e+01 1.58093e+00 506 2012 8 2.88643e+01 1.36800e+00 403 2012 9 2.75262e+01 9.44435e-01 610 2012 10 2.59072e+01 9.90083e-01 938 2012 11 2.17731e+01 1.18078e+00 698 2012 12 2.07038e+01 1.67002e+00 478 2013 1 1.83619e+01 1.15169e+00 377 2013 2 1.90412e+01 1.04029e+00 366 2013 3 1.77580e+01 1.08869e+00 548 2013 4 2.01893e+01 1.20655e+00 411 2013 5 2.35017e+01 2.09731e+00 747 2013 6 2.76237e+01 1.44645e+00 628 2013 7 2.84337e+01 9.33215e-01 441 2013 8 2.88897e+01 1.35273e+00 585 2013 9 2.94074e+01 9.01710e-01 747 2013 10 2.66212e+01 1.34908e+00 629 2013 11 2.23702e+01 1.80894e+00 483 2013 12 1.97752e+01 1.30361e+00 294 2014 1 1.77831e+01 1.68708e+00 433 2014 2 1.58760e+01 1.26843e+00 343 2014 3 1.70430e+01 1.04773e+00 421 2014 4 1.99947e+01 1.42885e+00 459 2014 5 2.40422e+01 1.39960e+00 624 2014 6 2.81267e+01 1.72810e+00 656 2014 7 2.80189e+01 1.16069e+00 691 2014 8 2.93357e+01 1.21765e+00 662 2014 9 2.95175e+01 1.28425e+00 578 2014 10 2.66677e+01 1.12478e+00 973 2014 11 2.14262e+01 1.95106e+00 631 2014 12 1.96365e+01 1.27809e+00 443 2015 1 1.87749e+01 1.10674e+00 415 2015 2 1.81926e+01 1.24954e+00 467 2015 3 1.95086e+01 1.14831e+00 346 2015 4 2.17166e+01 1.57108e+00 309 2015 5 2.51740e+01 1.75686e+00 772 2015 6 2.85590e+01 1.37964e+00 695 2015 7 2.86634e+01 1.73682e+00 607 2015 8 2.94868e+01 1.20248e+00 699 2015 9 2.88699e+01 8.74055e-01 609 2015 10 2.57795e+01 1.01619e+00 676 2015 11 2.38160e+01 1.74465e+00 612 2015 12 2.12804e+01 9.58232e-01 370 2016 1 1.86680e+01 1.37349e+00 426 2016 2 1.72571e+01 1.10985e+00 584 2016 3 1.84345e+01 1.08349e+00 431 2016 4 2.06234e+01 1.53716e+00 541 2016 5 2.48920e+01 1.57979e+00 539 2016 6 2.85049e+01 1.68843e+00 686 2016 7 3.00508e+01 1.07570e+00 794 2016 8 2.95124e+01 1.29725e+00 549 2016 9 2.94520e+01 8.85807e-01 698 2016 10 2.68473e+01 1.45332e+00 834 2016 11 2.37126e+01 1.62585e+00 695 2016 12 2.15771e+01 1.19811e+00 473 2017 1 2.01886e+01 9.81104e-01 502 2017 2 1.91213e+01 1.08332e+00 504 2017 3 1.95785e+01 1.09884e+00 627 2017 4 2.19654e+01 9.12643e-01 728 2017 5 2.43321e+01 1.24120e+00 622 2017 6 2.69769e+01 1.05301e+00 386 2017 7 2.94055e+01 1.18643e+00 719 2017 8 2.95730e+01 1.50314e+00 630 2017 9 2.80579e+01 1.21809e+00 680 2017 10 2.65628e+01 1.06622e+00 818 2017 11 2.31073e+01 9.15684e-01 742 2017 12 2.10471e+01 1.52834e+00 392 2018 1 1.88561e+01 1.16813e+00 519 2018 2 1.98833e+01 1.89927e+00 471 2018 3 2.00192e+01 1.59791e+00 657 2018 4 2.06647e+01 8.20947e-01 625 2018 5 2.51423e+01 2.28692e+00 712 2018 6 2.82954e+01 1.21417e+00 650 2018 7 2.90484e+01 1.34726e+00 662 2018 8 2.90682e+01 1.12369e+00 591 2018 9 2.94769e+01 1.12959e+00 707 2018 10 2.75792e+01 1.97955e+00 878 2018 11 2.28254e+01 1.55973e+00 317 2018 12 1.89000e+01 1.73234e+00 309 2019 1 1.83378e+01 1.08448e+00 372 2019 2 1.82647e+01 1.15993e+00 95 2019 3 1.86038e+01 1.10587e+00 493 2019 4 2.08733e+01 9.84199e-01 459 2019 5 2.59251e+01 2.06062e+00 840 2019 6 2.87928e+01 1.13546e+00 609 2019 7 2.95791e+01 1.13532e+00 541 2019 8 2.98450e+01 1.39445e+00 545 2019 9 2.95187e+01 8.44876e-01 880 2019 10 2.78258e+01 1.77169e+00 573 2019 11 2.31398e+01 1.41902e+00 520 2019 12 2.08917e+01 1.52734e+00 434 2020 1 1.87017e+01 1.45882e+00 484 2020 2 1.83523e+01 9.03818e-01 416 2020 3 2.14004e+01 2.18620e+00 514 2020 4 2.21182e+01 7.63230e-01 436 2020 5 2.40551e+01 1.30243e+00 741 2020 6 2.77552e+01 8.90989e-01 566 2020 7 2.90740e+01 1.21942e+00 546 2020 8 3.00060e+01 7.06221e-01 452 2020 9 2.87863e+01 1.74742e+00 510 2020 10 2.55365e+01 8.21563e-01 672 2020 11 2.38578e+01 1.25004e+00 858 2020 12 2.04210e+01 1.61838e+00 670 2021 1 1.75571e+01 9.93559e-01 485 2021 2 1.78020e+01 1.26508e+00 466 2021 3 1.81513e+01 9.78844e-01 423 2021 4 2.05469e+01 9.56744e-01 632 2021 5 2.38398e+01 1.44438e+00 627 2021 6 2.67147e+01 1.25036e+00 329 2021 7 2.95809e+01 9.64184e-01 472 2021 8 3.04311e+01 8.69767e-01 593 2021 9 2.81566e+01 1.01050e+00 555 2021 10 2.66401e+01 1.03476e+00 492 2021 11 2.21397e+01 1.23401e+00 823 2021 12 1.97577e+01 6.97608e-01 577 2022 1 1.93545e+01 8.29506e-01 509 2022 2 1.76300e+01 1.11272e+00 541 2022 3 1.86335e+01 9.91311e-01 767 2022 4 2.10413e+01 7.18769e-01 508 2022 5 2.54299e+01 7.48810e-01 706 2022 6 2.87897e+01 1.44851e+00 732 2022 7 3.00013e+01 8.96555e-01 600 2022 8 3.05210e+01 1.05625e+00 456 2022 9 2.94801e+01 7.09780e-01 718 2022 10 2.56928e+01 1.47356e+00 774 2022 11 2.29709e+01 1.51002e+00 482 2022 12 2.17375e+01 1.13775e+00 614 2023 1 2.05931e+01 1.03360e+00 630 2023 2 1.96261e+01 1.23320e+00 416 2023 3 2.06958e+01 1.14825e+00 508 2023 4 2.17305e+01 7.72343e-01 469 2023 5 2.38761e+01 1.73874e+00 694 2023 6 2.68111e+01 1.65836e+00 663 2023 7 2.91596e+01 1.32385e+00 726 2023 8 3.05203e+01 1.06465e+00 894 2023 9 3.02466e+01 7.20014e-01 719 2023 10 2.59371e+01 1.81747e+00 796 2023 11 2.29417e+01 1.28398e+00 578 2023 12 1.99194e+01 1.36883e+00 373 2024 1 1.79004e+01 1.44277e+00 380 2024 2 1.70194e+01 9.19612e-01 502 2024 3 1.84962e+01 1.15384e+00 417 2024 4 2.01647e+01 6.13123e-01 48