YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.81656e+01 2.25866e-01 32 2000 3 2.08242e+01 1.09786e+00 169 2000 4 2.16248e+01 1.33629e+00 163 2000 5 2.60136e+01 2.23219e+00 180 2000 6 2.71717e+01 1.64439e+00 115 2000 7 2.89171e+01 5.62245e-01 88 2000 8 2.99441e+01 3.76470e-01 64 2000 9 2.61428e+01 1.23407e+00 47 2000 10 2.24307e+01 1.12574e+00 194 2000 11 2.03766e+01 3.17208e+00 96 2000 12 1.45138e+01 1.63458e-02 4 2001 1 1.16917e+01 2.34356e-01 32 2001 2 1.80708e+01 1.67646e+00 96 2001 3 1.61179e+01 1.36625e+00 112 2001 4 2.14829e+01 1.93513e+00 219 2001 5 2.57216e+01 9.79566e-01 185 2001 6 2.74967e+01 9.07659e-01 32 2001 7 3.00577e+01 2.73901e-01 32 2001 8 2.93273e+01 1.01551e+00 211 2001 9 2.75203e+01 1.51449e+00 96 2001 10 2.11434e+01 1.79392e+00 107 2001 11 1.94105e+01 9.08123e-01 188 2001 12 1.93774e+01 1.33246e+00 82 2002 1 nan nan 0 2002 2 1.56007e+01 2.10253e+00 99 2002 3 1.97551e+01 3.00234e+00 61 2002 4 2.53075e+01 1.76666e+00 137 2002 5 2.58613e+01 2.10531e+00 156 2002 6 2.86621e+01 3.42876e-01 100 2002 7 2.95863e+01 8.76483e-01 347 2002 8 2.88580e+01 1.38397e+00 543 2002 9 2.82687e+01 8.43157e-01 443 2002 10 2.64821e+01 2.14825e+00 553 2002 11 2.01243e+01 2.62569e+00 444 2002 12 1.42876e+01 1.21756e+00 225 2003 1 1.15333e+01 1.40437e+00 418 2003 2 1.45505e+01 1.62528e+00 216 2003 3 2.11638e+01 1.57552e+00 293 2003 4 2.15379e+01 1.91345e+00 694 2003 5 2.71745e+01 1.19616e+00 619 2003 6 2.84852e+01 1.39037e+00 460 2003 7 2.96724e+01 1.29693e+00 375 2003 8 2.88677e+01 1.49711e+00 433 2003 9 2.79160e+01 9.98983e-01 487 2003 10 2.36981e+01 1.18796e+00 632 2003 11 2.14770e+01 1.81743e+00 614 2003 12 1.45246e+01 1.36774e+00 161 2004 1 1.29890e+01 1.13851e+00 328 2004 2 1.32665e+01 9.45252e-01 121 2004 3 1.89363e+01 1.49226e+00 599 2004 4 2.09822e+01 1.79433e+00 697 2004 5 2.66332e+01 1.86361e+00 846 2004 6 2.92919e+01 1.39670e+00 541 2004 7 3.01621e+01 1.74158e+00 596 2004 8 2.96111e+01 1.47969e+00 572 2004 9 2.68400e+01 1.98297e+00 475 2004 10 2.46155e+01 1.67886e+00 614 2004 11 2.14403e+01 2.85473e+00 460 2004 12 1.60363e+01 2.48618e+00 250 2005 1 1.39535e+01 2.35663e+00 209 2005 2 1.43660e+01 1.26024e+00 255 2005 3 1.68917e+01 2.00436e+00 384 2005 4 2.04909e+01 1.19424e+00 696 2005 5 2.49270e+01 2.60743e+00 658 2005 6 2.83915e+01 1.43376e+00 492 2005 7 3.04054e+01 1.24307e+00 603 2005 8 2.99022e+01 1.79699e+00 522 2005 9 2.77635e+01 1.24601e+00 734 2005 10 2.51478e+01 2.36565e+00 616 2005 11 2.01117e+01 1.78646e+00 401 2005 12 1.42903e+01 1.74870e+00 273 2006 1 1.50820e+01 1.41664e+00 345 2006 2 1.42201e+01 1.54199e+00 379 2006 3 1.87487e+01 1.50136e+00 707 2006 4 2.32452e+01 2.21424e+00 742 2006 5 2.54251e+01 1.73791e+00 758 2006 6 2.86088e+01 1.25860e+00 654 2006 7 2.98687e+01 1.46541e+00 571 2006 8 3.04026e+01 1.07922e+00 619 2006 9 2.78702e+01 1.40520e+00 645 2006 10 2.36351e+01 2.19314e+00 698 2006 11 1.84332e+01 1.48092e+00 368 2006 12 1.60464e+01 1.46715e+00 158 2007 1 1.40379e+01 1.48482e+00 222 2007 2 1.34052e+01 1.34941e+00 314 2007 3 1.90496e+01 1.88134e+00 674 2007 4 2.10490e+01 2.29319e+00 512 2007 5 2.45921e+01 9.66696e-01 780 2007 6 2.78978e+01 1.73576e+00 536 2007 7 3.01176e+01 1.39343e+00 452 2007 8 3.04415e+01 1.35413e+00 615 2007 9 2.81794e+01 1.55098e+00 531 2007 10 2.53312e+01 1.70039e+00 471 2007 11 1.85951e+01 1.61667e+00 686 2007 12 1.70494e+01 1.99055e+00 318 2008 1 1.39254e+01 2.26323e+00 140 2008 2 1.58393e+01 1.50323e+00 350 2008 3 1.79598e+01 1.65912e+00 493 2008 4 2.20234e+01 1.89043e+00 678 2008 5 2.55625e+01 1.38222e+00 599 2008 6 2.90809e+01 1.16710e+00 529 2008 7 2.94823e+01 1.38824e+00 473 2008 8 2.84665e+01 1.48644e+00 375 2008 9 2.72324e+01 1.98352e+00 578 2008 10 2.31023e+01 2.52681e+00 708 2008 11 1.67872e+01 2.36019e+00 413 2008 12 1.53628e+01 1.40260e+00 279 2009 1 1.44531e+01 2.64279e+00 316 2009 2 1.40387e+01 1.81317e+00 413 2009 3 1.82872e+01 2.76008e+00 435 2009 4 2.19491e+01 2.06425e+00 615 2009 5 2.63682e+01 1.39997e+00 577 2009 6 2.89415e+01 1.64562e+00 684 2009 7 2.89699e+01 1.28409e+00 593 2009 8 2.95161e+01 1.57827e+00 549 2009 9 2.81169e+01 8.67900e-01 489 2009 10 2.59383e+01 2.87627e+00 626 2009 11 1.90893e+01 1.45941e+00 352 2009 12 1.38671e+01 1.70290e+00 97 2010 1 1.15207e+01 3.19920e+00 229 2010 2 1.19564e+01 1.54122e+00 426 2010 3 1.55326e+01 2.03334e+00 462 2010 4 2.17461e+01 1.59293e+00 608 2010 5 2.74351e+01 1.86970e+00 783 2010 6 3.04357e+01 1.43595e+00 746 2010 7 2.99115e+01 1.76709e+00 629 2010 8 2.96069e+01 1.78359e+00 290 2010 9 2.87186e+01 1.31176e+00 687 2010 10 2.42539e+01 1.05282e+00 944 2010 11 1.92523e+01 1.27507e+00 594 2010 12 1.38257e+01 2.96833e+00 309 2011 1 1.09570e+01 1.39686e+00 355 2011 2 1.45378e+01 2.65906e+00 246 2011 3 1.93994e+01 1.96578e+00 552 2011 4 2.36861e+01 1.78458e+00 891 2011 5 2.59328e+01 2.05694e+00 935 2011 6 2.96908e+01 1.74439e+00 726 2011 7 2.93899e+01 1.23545e+00 480 2011 8 3.04064e+01 1.33412e+00 740 2011 9 2.79584e+01 1.14202e+00 612 2011 10 2.27721e+01 2.07085e+00 523 2011 11 1.80317e+01 1.09558e+00 494 2011 12 1.56996e+01 1.07721e+00 277 2012 1 1.50538e+01 1.93222e+00 487 2012 2 1.53803e+01 1.89304e+00 159 2012 3 2.19874e+01 2.26943e+00 737 2012 4 2.33688e+01 1.31884e+00 804 2012 5 2.69489e+01 1.12508e+00 787 2012 6 2.72354e+01 1.52612e+00 509 2012 7 2.95669e+01 1.47141e+00 525 2012 8 2.89817e+01 1.69714e+00 372 2012 9 2.82610e+01 1.44719e+00 634 2012 10 2.42476e+01 2.20771e+00 580 2012 11 1.80607e+01 1.33258e+00 636 2012 12 1.69697e+01 2.01335e+00 342 2013 1 1.52767e+01 1.63482e+00 243 2013 2 1.60295e+01 1.92430e+00 354 2013 3 1.57266e+01 1.79120e+00 615 2013 4 2.11913e+01 1.75229e+00 526 2013 5 2.49471e+01 2.30881e+00 680 2013 6 2.81748e+01 1.48558e+00 570 2013 7 2.80702e+01 2.09818e+00 298 2013 8 3.02618e+01 1.61203e+00 528 2013 9 2.91801e+01 1.80836e+00 631 2013 10 2.44583e+01 2.09568e+00 574 2013 11 1.93086e+01 2.51136e+00 408 2013 12 1.67136e+01 1.78801e+00 277 2014 1 1.25416e+01 6.27650e-01 221 2014 2 1.47987e+01 1.77948e+00 268 2014 3 1.72017e+01 1.53809e+00 492 2014 4 2.15952e+01 1.87125e+00 570 2014 5 2.55766e+01 1.75272e+00 658 2014 6 2.91042e+01 1.57506e+00 523 2014 7 2.99031e+01 1.33125e+00 490 2014 8 3.01290e+01 1.06077e+00 615 2014 9 2.83695e+01 1.52808e+00 283 2014 10 2.46023e+01 1.81045e+00 797 2014 11 1.64621e+01 2.17901e+00 374 2014 12 1.54813e+01 1.27166e+00 373 2015 1 1.40950e+01 1.15879e+00 365 2015 2 1.32150e+01 1.50088e+00 413 2015 3 1.96957e+01 2.43331e+00 443 2015 4 2.31585e+01 1.76895e+00 304 2015 5 2.70268e+01 1.93714e+00 881 2015 6 3.01485e+01 1.30554e+00 624 2015 7 2.97463e+01 1.29465e+00 362 2015 8 3.02702e+01 1.52545e+00 546 2015 9 2.74755e+01 1.94056e+00 300 2015 10 2.38405e+01 1.54498e+00 494 2015 11 2.23499e+01 3.41279e+00 389 2015 12 1.80894e+01 1.59603e+00 270 2016 1 1.36845e+01 1.62164e+00 303 2016 2 1.40652e+01 2.01919e+00 353 2016 3 1.84296e+01 2.01324e+00 405 2016 4 2.22777e+01 1.85366e+00 579 2016 5 2.63537e+01 1.59373e+00 704 2016 6 2.96120e+01 1.33018e+00 630 2016 7 3.13500e+01 1.13746e+00 696 2016 8 3.02947e+01 1.52301e+00 599 2016 9 2.93530e+01 1.03366e+00 661 2016 10 2.49969e+01 1.65244e+00 685 2016 11 2.04030e+01 2.18804e+00 610 2016 12 1.72875e+01 2.04618e+00 331 2017 1 1.57546e+01 2.07635e+00 273 2017 2 1.78709e+01 2.10503e+00 538 2017 3 1.92780e+01 2.14325e+00 636 2017 4 2.32200e+01 1.64032e+00 630 2017 5 2.49211e+01 1.87007e+00 484 2017 6 2.85823e+01 1.91645e+00 389 2017 7 3.06560e+01 1.18814e+00 397 2017 8 3.00793e+01 1.50301e+00 553 2017 9 2.78611e+01 1.67916e+00 527 2017 10 2.46016e+01 2.69975e+00 776 2017 11 1.96041e+01 1.29465e+00 685 2017 12 1.62375e+01 2.77012e+00 320 2018 1 1.16677e+01 1.22683e+00 283 2018 2 1.96543e+01 3.74591e+00 298 2018 3 1.82207e+01 1.93301e+00 626 2018 4 2.14777e+01 1.27446e+00 535 2018 5 2.54502e+01 2.15610e+00 543 2018 6 2.96546e+01 1.45649e+00 488 2018 7 3.02119e+01 1.34939e+00 450 2018 8 3.02288e+01 9.31333e-01 437 2018 9 3.03249e+01 1.17644e+00 731 2018 10 2.62164e+01 2.47969e+00 703 2018 11 1.84649e+01 2.56842e+00 208 2018 12 1.55917e+01 1.71492e+00 255 2019 1 1.48871e+01 2.19844e+00 369 2019 2 1.70779e+01 2.93004e+00 257 2019 3 1.83107e+01 1.71100e+00 406 2019 4 2.22050e+01 2.12928e+00 532 2019 5 2.78002e+01 2.06793e+00 886 2019 6 2.94813e+01 1.03514e+00 432 2019 7 2.98641e+01 1.35084e+00 562 2019 8 3.04406e+01 9.84995e-01 569 2019 9 2.90251e+01 1.19585e+00 818 2019 10 2.59270e+01 2.25911e+00 627 2019 11 1.82862e+01 2.43947e+00 521 2019 12 1.59897e+01 1.64763e+00 407 2020 1 1.53046e+01 1.66576e+00 533 2020 2 1.51682e+01 1.00975e+00 379 2020 3 2.18725e+01 3.72141e+00 591 2020 4 2.38237e+01 1.04193e+00 510 2020 5 2.49926e+01 1.27802e+00 641 2020 6 2.94552e+01 1.31795e+00 561 2020 7 3.02252e+01 1.23454e+00 595 2020 8 3.08095e+01 1.16400e+00 429 2020 9 2.83446e+01 2.43454e+00 371 2020 10 2.53725e+01 1.27695e+00 649 2020 11 2.09225e+01 1.88561e+00 729 2020 12 1.41369e+01 1.22836e+00 630 2021 1 1.38607e+01 1.65477e+00 502 2021 2 1.58117e+01 2.23410e+00 464 2021 3 1.87731e+01 1.63771e+00 589 2021 4 2.16836e+01 1.61079e+00 590 2021 5 2.56808e+01 1.59471e+00 619 2021 6 2.86220e+01 1.35108e+00 328 2021 7 2.94928e+01 1.25838e+00 363 2021 8 3.04145e+01 1.34285e+00 354 2021 9 2.84451e+01 9.55087e-01 533 2021 10 2.57552e+01 1.93320e+00 631 2021 11 1.82118e+01 1.77187e+00 680 2021 12 1.74314e+01 1.42321e+00 556 2022 1 1.50258e+01 2.73565e+00 647 2022 2 1.55178e+01 2.53472e+00 563 2022 3 1.93384e+01 1.14946e+00 711 2022 4 2.31208e+01 1.43034e+00 472 2022 5 2.67032e+01 1.35682e+00 660 2022 6 2.99780e+01 1.27866e+00 556 2022 7 3.05641e+01 1.21439e+00 531 2022 8 3.06487e+01 1.26426e+00 547 2022 9 2.80772e+01 1.86108e+00 466 2022 10 2.29530e+01 1.49205e+00 855 2022 11 2.10617e+01 2.20790e+00 465 2022 12 1.67274e+01 3.54293e+00 806 2023 1 1.46242e+01 1.13021e+00 600 2023 2 1.70150e+01 1.81348e+00 473 2023 3 2.04742e+01 2.07894e+00 706 2023 4 2.28310e+01 1.42924e+00 430 2023 5 2.55971e+01 1.89099e+00 652 2023 6 2.76667e+01 1.94598e+00 561 2023 7 3.07233e+01 1.37754e+00 618 2023 8 3.11702e+01 1.02027e+00 692 2023 9 2.89800e+01 1.39224e+00 546 2023 10 2.31442e+01 1.34745e+00 654 2023 11 1.99974e+01 1.86070e+00 530 2023 12 1.44358e+01 1.37138e+00 351 2024 1 1.36361e+01 1.18592e+00 314 2024 2 1.54340e+01 1.09573e+00 466 2024 3 2.02819e+01 9.46062e-01 370 2024 4 2.13834e+01 1.20943e-01 32