YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.79181e+01 2.20059e-01 35 2000 3 2.02891e+01 1.16537e+00 170 2000 4 2.18729e+01 1.13827e+00 131 2000 5 2.61088e+01 1.98693e+00 170 2000 6 2.79269e+01 8.08739e-01 64 2000 7 2.96942e+01 1.08637e+00 124 2000 8 2.98096e+01 6.75745e-01 79 2000 9 2.62027e+01 1.04988e+00 80 2000 10 2.27700e+01 1.31826e+00 207 2000 11 2.05579e+01 2.55695e+00 114 2000 12 1.62859e+01 8.24850e-02 16 2001 1 1.27295e+01 3.88381e-01 54 2001 2 1.75607e+01 8.29711e-01 52 2001 3 1.68139e+01 1.57856e+00 61 2001 4 2.09657e+01 2.17500e+00 165 2001 5 2.51352e+01 1.36258e+00 209 2001 6 2.68225e+01 7.23022e-01 64 2001 7 2.53319e+01 7.50389e-02 16 2001 8 2.87823e+01 1.67829e+00 131 2001 9 2.64601e+01 1.35861e+00 96 2001 10 2.20133e+01 1.50296e+00 144 2001 11 2.00679e+01 8.17178e-01 161 2001 12 1.89826e+01 2.51171e+00 205 2002 1 1.52681e+01 2.41659e-02 16 2002 2 1.53643e+01 9.17430e-01 101 2002 3 1.59630e+01 3.47399e+00 44 2002 4 2.32958e+01 2.85764e+00 173 2002 5 2.63542e+01 1.47564e+00 136 2002 6 2.83133e+01 7.63004e-01 110 2002 7 2.93874e+01 1.77443e+00 409 2002 8 2.89333e+01 1.51521e+00 548 2002 9 2.83280e+01 1.29980e+00 444 2002 10 2.67157e+01 1.83083e+00 431 2002 11 2.08023e+01 2.19694e+00 371 2002 12 1.48376e+01 1.00597e+00 218 2003 1 1.31515e+01 1.31026e+00 441 2003 2 1.45751e+01 1.60845e+00 252 2003 3 1.96716e+01 1.77211e+00 310 2003 4 2.15123e+01 2.13384e+00 599 2003 5 2.63022e+01 1.04742e+00 575 2003 6 2.80405e+01 1.56623e+00 419 2003 7 2.89719e+01 1.46243e+00 396 2003 8 2.80833e+01 1.41579e+00 487 2003 9 2.78319e+01 1.19874e+00 466 2003 10 2.34573e+01 1.07581e+00 595 2003 11 2.13609e+01 1.78095e+00 674 2003 12 1.53037e+01 1.54065e+00 270 2004 1 1.32468e+01 1.09695e+00 319 2004 2 1.30975e+01 1.22651e+00 177 2004 3 1.82899e+01 1.89302e+00 602 2004 4 2.09032e+01 1.80706e+00 679 2004 5 2.60703e+01 1.87301e+00 909 2004 6 2.86511e+01 1.14334e+00 573 2004 7 2.89698e+01 1.67858e+00 481 2004 8 2.92433e+01 1.62538e+00 499 2004 9 2.73631e+01 2.05101e+00 497 2004 10 2.50230e+01 1.46371e+00 684 2004 11 2.12930e+01 2.41150e+00 509 2004 12 1.63143e+01 1.90182e+00 264 2005 1 1.36293e+01 1.32347e+00 244 2005 2 1.43561e+01 1.32952e+00 260 2005 3 1.68191e+01 1.96965e+00 512 2005 4 2.05011e+01 1.62392e+00 521 2005 5 2.44079e+01 2.47878e+00 764 2005 6 2.81280e+01 1.26647e+00 598 2005 7 2.97091e+01 1.59709e+00 610 2005 8 2.94907e+01 1.47916e+00 547 2005 9 2.78082e+01 1.37188e+00 670 2005 10 2.48165e+01 2.27007e+00 650 2005 11 2.01710e+01 1.68548e+00 376 2005 12 1.53299e+01 2.06946e+00 260 2006 1 1.51904e+01 1.25028e+00 390 2006 2 1.48617e+01 1.34121e+00 448 2006 3 1.84540e+01 1.21278e+00 685 2006 4 2.26816e+01 2.00751e+00 716 2006 5 2.50510e+01 1.66490e+00 777 2006 6 2.84381e+01 1.23044e+00 771 2006 7 2.98150e+01 1.65153e+00 632 2006 8 3.02773e+01 1.33209e+00 666 2006 9 2.86331e+01 1.45926e+00 561 2006 10 2.45811e+01 2.10163e+00 673 2006 11 1.86268e+01 1.80150e+00 345 2006 12 1.63333e+01 1.28291e+00 142 2007 1 1.54587e+01 1.93680e+00 152 2007 2 1.37690e+01 1.46202e+00 331 2007 3 1.89686e+01 1.69250e+00 672 2007 4 2.09026e+01 1.87701e+00 563 2007 5 2.44513e+01 9.83105e-01 848 2007 6 2.76546e+01 1.67756e+00 571 2007 7 2.95195e+01 1.27009e+00 466 2007 8 3.02220e+01 1.44359e+00 607 2007 9 2.83409e+01 1.37869e+00 471 2007 10 2.61039e+01 1.07934e+00 416 2007 11 1.90864e+01 1.23964e+00 608 2007 12 1.73011e+01 1.05289e+00 281 2008 1 1.49905e+01 1.20636e+00 159 2008 2 1.61169e+01 1.29890e+00 373 2008 3 1.79642e+01 1.56368e+00 638 2008 4 2.17108e+01 1.78949e+00 606 2008 5 2.46159e+01 2.12928e+00 727 2008 6 2.87250e+01 1.25297e+00 568 2008 7 2.87712e+01 1.16346e+00 517 2008 8 2.85224e+01 9.61870e-01 393 2008 9 2.75249e+01 1.99643e+00 550 2008 10 2.38489e+01 1.99670e+00 754 2008 11 1.78005e+01 1.86337e+00 486 2008 12 1.58455e+01 1.42111e+00 342 2009 1 1.51900e+01 1.94647e+00 431 2009 2 1.46140e+01 1.72150e+00 510 2009 3 1.80897e+01 2.16299e+00 589 2009 4 2.16055e+01 1.94304e+00 588 2009 5 2.53627e+01 1.47464e+00 572 2009 6 2.81255e+01 1.12534e+00 690 2009 7 2.80334e+01 1.14353e+00 562 2009 8 2.90429e+01 1.51929e+00 470 2009 9 2.81405e+01 1.29302e+00 526 2009 10 2.54587e+01 2.74549e+00 605 2009 11 1.95798e+01 1.38178e+00 359 2009 12 1.32622e+01 2.11935e+00 111 2010 1 1.33007e+01 1.83271e+00 292 2010 2 1.18397e+01 1.57281e+00 273 2010 3 1.53434e+01 2.08455e+00 456 2010 4 2.15140e+01 1.46252e+00 603 2010 5 2.70700e+01 2.02238e+00 692 2010 6 2.97895e+01 1.06825e+00 751 2010 7 2.94633e+01 1.32399e+00 677 2010 8 2.96279e+01 1.49216e+00 298 2010 9 2.91009e+01 1.44189e+00 685 2010 10 2.41130e+01 1.24290e+00 809 2010 11 1.97145e+01 1.46555e+00 668 2010 12 1.43159e+01 2.61283e+00 485 2011 1 1.14854e+01 1.26605e+00 400 2011 2 1.43871e+01 2.16174e+00 193 2011 3 1.89559e+01 1.80444e+00 538 2011 4 2.30335e+01 1.69568e+00 691 2011 5 2.55632e+01 1.81195e+00 910 2011 6 2.93821e+01 1.20015e+00 721 2011 7 2.94317e+01 1.33016e+00 426 2011 8 2.99010e+01 1.15135e+00 840 2011 9 2.74933e+01 9.48621e-01 599 2011 10 2.34425e+01 1.94767e+00 641 2011 11 1.84555e+01 8.34623e-01 478 2011 12 1.61349e+01 6.88593e-01 282 2012 1 1.55032e+01 1.49720e+00 503 2012 2 1.51072e+01 1.40604e+00 110 2012 3 2.14319e+01 2.06227e+00 608 2012 4 2.29716e+01 1.35965e+00 832 2012 5 2.69400e+01 1.17783e+00 787 2012 6 2.70577e+01 1.53261e+00 527 2012 7 2.88326e+01 1.54250e+00 491 2012 8 2.84580e+01 1.24619e+00 385 2012 9 2.76240e+01 1.56871e+00 491 2012 10 2.46374e+01 2.28995e+00 670 2012 11 1.84142e+01 1.43630e+00 577 2012 12 1.68794e+01 1.40156e+00 261 2013 1 1.58704e+01 1.35190e+00 240 2013 2 1.60190e+01 1.28950e+00 292 2013 3 1.64415e+01 1.87908e+00 553 2013 4 2.06076e+01 1.93210e+00 456 2013 5 2.44755e+01 2.33547e+00 570 2013 6 2.80415e+01 1.56608e+00 483 2013 7 2.75707e+01 2.16870e+00 343 2013 8 2.94406e+01 1.72532e+00 395 2013 9 2.90199e+01 1.50205e+00 777 2013 10 2.48623e+01 1.72625e+00 582 2013 11 1.97558e+01 2.61270e+00 356 2013 12 1.65725e+01 1.57799e+00 239 2014 1 1.30812e+01 1.55293e+00 275 2014 2 1.47617e+01 1.61482e+00 324 2014 3 1.69920e+01 1.46431e+00 461 2014 4 2.06804e+01 1.96535e+00 475 2014 5 2.50433e+01 1.88976e+00 662 2014 6 2.82299e+01 1.81142e+00 555 2014 7 2.87325e+01 1.10382e+00 622 2014 8 2.93928e+01 1.52783e+00 665 2014 9 2.87564e+01 1.55998e+00 489 2014 10 2.48308e+01 1.70780e+00 814 2014 11 1.71230e+01 2.38558e+00 429 2014 12 1.58450e+01 1.02296e+00 364 2015 1 1.40920e+01 1.36346e+00 267 2015 2 1.40309e+01 1.05889e+00 409 2015 3 1.88127e+01 2.43818e+00 444 2015 4 2.27194e+01 1.82073e+00 352 2015 5 2.62226e+01 1.71672e+00 808 2015 6 2.96030e+01 1.38067e+00 554 2015 7 2.91484e+01 1.67458e+00 545 2015 8 3.01339e+01 1.23416e+00 536 2015 9 2.79788e+01 1.29296e+00 320 2015 10 2.39449e+01 1.39469e+00 583 2015 11 2.17856e+01 2.96128e+00 540 2015 12 1.77513e+01 9.05139e-01 234 2016 1 1.43868e+01 1.44533e+00 307 2016 2 1.51340e+01 1.66332e+00 430 2016 3 1.90090e+01 1.61953e+00 399 2016 4 2.16984e+01 1.77482e+00 533 2016 5 2.53134e+01 1.47826e+00 701 2016 6 2.87234e+01 1.66948e+00 720 2016 7 3.06959e+01 1.30209e+00 768 2016 8 2.99322e+01 1.75217e+00 538 2016 9 2.91050e+01 1.11923e+00 634 2016 10 2.54302e+01 1.68701e+00 852 2016 11 2.07225e+01 2.09776e+00 596 2016 12 1.77865e+01 1.21952e+00 255 2017 1 1.63504e+01 2.01609e+00 295 2017 2 1.82533e+01 1.80471e+00 584 2017 3 1.88283e+01 2.28847e+00 612 2017 4 2.31850e+01 1.67300e+00 639 2017 5 2.46866e+01 1.72086e+00 547 2017 6 2.75767e+01 2.10764e+00 322 2017 7 2.98257e+01 1.50250e+00 558 2017 8 2.93318e+01 1.78487e+00 559 2017 9 2.76999e+01 1.71762e+00 609 2017 10 2.46226e+01 2.20961e+00 794 2017 11 1.99465e+01 1.51151e+00 669 2017 12 1.67761e+01 2.19464e+00 291 2018 1 1.20943e+01 1.00719e+00 201 2018 2 1.88569e+01 2.80700e+00 305 2018 3 1.90658e+01 1.55077e+00 606 2018 4 2.14962e+01 1.27835e+00 621 2018 5 2.54781e+01 1.69771e+00 644 2018 6 2.86064e+01 1.43193e+00 509 2018 7 2.94931e+01 1.38066e+00 535 2018 8 2.93367e+01 1.32575e+00 404 2018 9 2.97591e+01 1.37454e+00 752 2018 10 2.68503e+01 2.50347e+00 730 2018 11 1.91010e+01 2.94463e+00 273 2018 12 1.56382e+01 1.58823e+00 231 2019 1 1.54129e+01 1.73620e+00 406 2019 2 1.71095e+01 1.76796e+00 241 2019 3 1.79375e+01 1.91457e+00 460 2019 4 2.17869e+01 2.14594e+00 558 2019 5 2.73050e+01 2.17618e+00 933 2019 6 2.85672e+01 1.94662e+00 502 2019 7 2.99724e+01 1.23666e+00 443 2019 8 2.98747e+01 1.09144e+00 482 2019 9 2.92183e+01 1.20961e+00 988 2019 10 2.70629e+01 2.00928e+00 568 2019 11 1.91929e+01 2.05916e+00 513 2019 12 1.63902e+01 1.30814e+00 341 2020 1 1.55004e+01 1.48056e+00 465 2020 2 1.59268e+01 1.34824e+00 432 2020 3 2.17318e+01 3.42036e+00 582 2020 4 2.31982e+01 1.06159e+00 380 2020 5 2.46980e+01 1.63473e+00 676 2020 6 2.89318e+01 1.29797e+00 352 2020 7 2.90233e+01 9.15473e-01 339 2020 8 3.06274e+01 8.85417e-01 470 2020 9 2.87306e+01 2.12493e+00 405 2020 10 2.50488e+01 1.21123e+00 630 2020 11 2.14809e+01 1.81697e+00 739 2020 12 1.56939e+01 1.60439e+00 701 2021 1 1.46633e+01 1.78174e+00 387 2021 2 1.55230e+01 1.97376e+00 387 2021 3 1.84670e+01 1.30179e+00 573 2021 4 2.11982e+01 1.62093e+00 676 2021 5 2.51334e+01 1.68107e+00 818 2021 6 2.81957e+01 1.80682e+00 378 2021 7 2.94334e+01 1.35594e+00 398 2021 8 2.94984e+01 1.67957e+00 520 2021 9 2.77905e+01 1.28399e+00 489 2021 10 2.57576e+01 1.58317e+00 529 2021 11 1.91965e+01 1.54459e+00 712 2021 12 1.75289e+01 1.59397e+00 417 2022 1 1.54870e+01 2.79758e+00 654 2022 2 1.57849e+01 2.21848e+00 483 2022 3 1.93282e+01 1.13702e+00 644 2022 4 2.27304e+01 1.44281e+00 475 2022 5 2.63890e+01 1.26149e+00 648 2022 6 2.94419e+01 1.60924e+00 494 2022 7 3.02556e+01 1.16470e+00 463 2022 8 3.02987e+01 1.54043e+00 351 2022 9 2.80802e+01 2.08369e+00 534 2022 10 2.34524e+01 1.57004e+00 790 2022 11 2.12543e+01 2.27321e+00 428 2022 12 1.64388e+01 3.33448e+00 678 2023 1 1.55292e+01 1.42856e+00 666 2023 2 1.79696e+01 1.88424e+00 562 2023 3 2.04520e+01 1.73045e+00 546 2023 4 2.28690e+01 1.02135e+00 492 2023 5 2.51810e+01 1.71388e+00 656 2023 6 2.78773e+01 1.66315e+00 592 2023 7 2.99619e+01 1.05193e+00 576 2023 8 3.08329e+01 1.19589e+00 625 2023 9 2.93046e+01 1.37942e+00 505 2023 10 2.38289e+01 1.39656e+00 731 2023 11 2.00026e+01 1.56399e+00 488 2023 12 1.43773e+01 1.19366e+00 326 2024 1 1.37289e+01 1.08067e+00 388 2024 2 1.55112e+01 1.25117e+00 466 2024 3 1.92508e+01 1.45467e+00 364 2024 4 2.04777e+01 6.72706e-01 32