YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.87695e+01 1.33208e-01 32 2000 3 1.98887e+01 1.10633e+00 157 2000 4 2.17003e+01 1.14924e+00 114 2000 5 2.64896e+01 1.55309e+00 172 2000 6 2.77581e+01 1.08048e+00 123 2000 7 3.01984e+01 7.79159e-01 176 2000 8 2.88422e+01 9.86481e-01 63 2000 9 2.74113e+01 1.90935e+00 131 2000 10 2.28733e+01 1.48715e+00 142 2000 11 2.19457e+01 2.32824e+00 116 2000 12 1.65594e+01 5.36412e-01 24 2001 1 1.33259e+01 3.09846e-02 16 2001 2 1.71716e+01 2.31686e+00 32 2001 3 1.72731e+01 1.85033e+00 88 2001 4 2.21764e+01 2.69829e+00 145 2001 5 2.51444e+01 1.52105e+00 164 2001 6 nan nan 0 2001 7 2.92865e+01 9.13985e-01 105 2001 8 2.88162e+01 1.22772e+00 114 2001 9 2.74101e+01 1.63508e+00 154 2001 10 2.24651e+01 1.83367e+00 186 2001 11 2.00052e+01 1.13843e+00 180 2001 12 1.87759e+01 1.84940e+00 143 2002 1 1.59096e+01 1.68787e+00 48 2002 2 1.48675e+01 8.11688e-01 38 2002 3 nan nan 0 2002 4 2.28693e+01 2.61374e+00 80 2002 5 2.54431e+01 2.31827e+00 119 2002 6 2.79670e+01 1.23910e+00 128 2002 7 3.00030e+01 1.40643e+00 471 2002 8 2.92977e+01 1.41977e+00 550 2002 9 2.79449e+01 1.65620e+00 434 2002 10 2.61778e+01 2.65120e+00 412 2002 11 1.90017e+01 1.97269e+00 292 2002 12 1.55177e+01 1.01134e+00 150 2003 1 1.26569e+01 1.04059e+00 121 2003 2 1.44861e+01 1.33189e+00 277 2003 3 2.03069e+01 2.06726e+00 359 2003 4 2.14614e+01 2.69444e+00 543 2003 5 2.62489e+01 1.22341e+00 414 2003 6 2.78510e+01 1.55468e+00 425 2003 7 2.84689e+01 1.49687e+00 411 2003 8 2.84706e+01 1.65949e+00 452 2003 9 2.75593e+01 1.65276e+00 490 2003 10 2.29251e+01 1.29491e+00 537 2003 11 2.14585e+01 2.14846e+00 658 2003 12 1.56425e+01 7.29945e-01 34 2004 1 1.51303e+01 1.44253e+00 48 2004 2 1.43423e+01 1.59963e+00 71 2004 3 1.87185e+01 1.73380e+00 539 2004 4 2.04343e+01 2.25514e+00 471 2004 5 2.57528e+01 2.36651e+00 769 2004 6 2.79815e+01 1.53004e+00 431 2004 7 2.94838e+01 1.49200e+00 580 2004 8 2.84379e+01 1.55582e+00 407 2004 9 2.68649e+01 1.96624e+00 588 2004 10 2.47575e+01 1.89677e+00 649 2004 11 2.10465e+01 2.24113e+00 336 2004 12 1.66908e+01 1.35515e+00 134 2005 1 1.38018e+01 1.52885e+00 93 2005 2 1.53433e+01 1.60983e+00 238 2005 3 1.58036e+01 2.24747e+00 240 2005 4 2.06058e+01 1.79654e+00 613 2005 5 2.51615e+01 2.55479e+00 714 2005 6 2.83319e+01 1.78573e+00 609 2005 7 2.94219e+01 1.63989e+00 548 2005 8 2.91277e+01 1.79699e+00 493 2005 9 2.82893e+01 1.33177e+00 707 2005 10 2.46743e+01 1.85927e+00 704 2005 11 1.99714e+01 2.18482e+00 323 2005 12 1.61915e+01 1.86690e+00 133 2006 1 1.57047e+01 1.46281e+00 339 2006 2 1.46716e+01 1.55391e+00 315 2006 3 1.77509e+01 1.81826e+00 507 2006 4 2.28758e+01 2.72432e+00 630 2006 5 2.53187e+01 2.17932e+00 644 2006 6 2.90139e+01 1.66842e+00 708 2006 7 2.97773e+01 1.52535e+00 445 2006 8 3.00521e+01 1.43157e+00 564 2006 9 2.81011e+01 1.89613e+00 660 2006 10 2.45422e+01 2.46447e+00 503 2006 11 1.83624e+01 1.92378e+00 252 2006 12 1.62598e+01 1.59521e+00 100 2007 1 1.50399e+01 2.13542e+00 181 2007 2 1.41245e+01 1.27748e+00 132 2007 3 1.83686e+01 2.37101e+00 514 2007 4 2.07715e+01 1.93730e+00 568 2007 5 2.47759e+01 1.23775e+00 779 2007 6 2.85347e+01 1.42156e+00 581 2007 7 2.88826e+01 2.02444e+00 502 2007 8 3.05193e+01 1.20109e+00 674 2007 9 2.78848e+01 1.72428e+00 634 2007 10 2.48482e+01 1.87309e+00 452 2007 11 1.95371e+01 1.62070e+00 355 2007 12 1.83422e+01 1.75532e+00 197 2008 1 1.54487e+01 7.45807e-01 90 2008 2 1.61068e+01 1.77065e+00 359 2008 3 1.71680e+01 1.67857e+00 409 2008 4 2.16175e+01 2.12567e+00 496 2008 5 2.51923e+01 2.44298e+00 681 2008 6 2.91732e+01 1.82312e+00 675 2008 7 2.91944e+01 1.53154e+00 634 2008 8 2.89383e+01 1.27408e+00 402 2008 9 2.70771e+01 1.79335e+00 672 2008 10 2.36760e+01 1.85487e+00 639 2008 11 1.90961e+01 1.33511e+00 369 2008 12 1.60967e+01 1.19472e+00 149 2009 1 1.58309e+01 1.98947e+00 203 2009 2 1.35308e+01 1.66705e+00 237 2009 3 1.86032e+01 2.59216e+00 426 2009 4 2.13862e+01 2.42560e+00 581 2009 5 2.57356e+01 1.73410e+00 566 2009 6 2.91248e+01 2.07877e+00 792 2009 7 2.90747e+01 1.56381e+00 564 2009 8 2.85952e+01 1.62559e+00 529 2009 9 2.80838e+01 1.54994e+00 475 2009 10 2.50762e+01 2.91590e+00 366 2009 11 1.91269e+01 1.73782e+00 332 2009 12 1.37261e+01 1.17954e+00 86 2010 1 1.45363e+01 1.40395e+00 122 2010 2 1.14767e+01 1.13163e+00 213 2010 3 1.49851e+01 2.46361e+00 376 2010 4 2.14900e+01 1.58803e+00 605 2010 5 2.72022e+01 2.24279e+00 565 2010 6 3.05681e+01 1.94386e+00 781 2010 7 3.01039e+01 1.51111e+00 737 2010 8 2.97206e+01 1.85409e+00 409 2010 9 2.90106e+01 1.72965e+00 766 2010 10 2.36184e+01 1.39117e+00 753 2010 11 1.91885e+01 1.86394e+00 340 2010 12 1.42403e+01 1.72085e+00 145 2011 1 1.21986e+01 1.08934e+00 229 2011 2 1.57461e+01 3.81655e+00 257 2011 3 1.96347e+01 3.00973e+00 650 2011 4 2.29219e+01 1.81610e+00 575 2011 5 2.52766e+01 2.37582e+00 851 2011 6 2.97257e+01 1.36811e+00 783 2011 7 2.99909e+01 1.51321e+00 591 2011 8 3.08711e+01 1.20048e+00 658 2011 9 2.68989e+01 1.56715e+00 693 2011 10 2.27146e+01 1.83877e+00 691 2011 11 1.79027e+01 1.29028e+00 360 2011 12 1.51979e+01 5.16711e-01 28 2012 1 1.52627e+01 2.02006e+00 203 2012 2 1.52987e+01 1.97888e+00 127 2012 3 2.13010e+01 2.74765e+00 437 2012 4 2.27870e+01 1.52207e+00 746 2012 5 2.70475e+01 1.75733e+00 804 2012 6 2.78283e+01 1.18068e+00 570 2012 7 2.90357e+01 1.37599e+00 352 2012 8 2.90647e+01 1.50010e+00 413 2012 9 2.71477e+01 1.81317e+00 716 2012 10 2.39380e+01 1.69197e+00 719 2012 11 1.81588e+01 1.52889e+00 389 2012 12 1.77278e+01 1.79033e+00 222 2013 1 1.57160e+01 1.73851e+00 133 2013 2 1.55856e+01 1.07533e+00 216 2013 3 1.52990e+01 1.81709e+00 448 2013 4 2.05763e+01 2.07533e+00 435 2013 5 2.41508e+01 2.94956e+00 578 2013 6 2.79011e+01 1.40194e+00 508 2013 7 2.82681e+01 1.67093e+00 404 2013 8 2.83809e+01 1.95121e+00 509 2013 9 2.87120e+01 1.72161e+00 709 2013 10 2.45201e+01 2.44121e+00 623 2013 11 1.98751e+01 1.82561e+00 293 2013 12 1.65880e+01 1.80496e+00 117 2014 1 1.24246e+01 6.72862e-01 96 2014 2 1.41184e+01 2.42510e+00 219 2014 3 1.65601e+01 1.56839e+00 230 2014 4 1.99851e+01 2.38653e+00 534 2014 5 2.48743e+01 2.40380e+00 614 2014 6 2.87398e+01 1.81537e+00 584 2014 7 2.89133e+01 1.37989e+00 625 2014 8 2.96993e+01 1.49981e+00 632 2014 9 2.83769e+01 2.16430e+00 473 2014 10 2.45142e+01 1.92370e+00 801 2014 11 1.72200e+01 2.20903e+00 216 2014 12 1.68416e+01 1.56228e+00 113 2015 1 1.47983e+01 1.35468e+00 102 2015 2 1.44692e+01 1.03005e+00 132 2015 3 2.02789e+01 2.25105e+00 325 2015 4 2.23989e+01 1.12451e+00 351 2015 5 2.61066e+01 2.25422e+00 616 2015 6 2.89837e+01 2.17164e+00 610 2015 7 2.93889e+01 1.64357e+00 533 2015 8 2.96019e+01 1.36848e+00 666 2015 9 2.81844e+01 1.84542e+00 517 2015 10 2.33757e+01 1.57267e+00 572 2015 11 2.19310e+01 2.62260e+00 385 2015 12 1.82955e+01 1.78215e+00 168 2016 1 1.48259e+01 2.90015e-01 56 2016 2 1.48913e+01 2.03232e+00 464 2016 3 1.80102e+01 2.06808e+00 371 2016 4 2.16926e+01 2.18836e+00 462 2016 5 2.53240e+01 2.14564e+00 541 2016 6 2.97281e+01 1.26877e+00 652 2016 7 3.05818e+01 1.33686e+00 640 2016 8 2.99960e+01 1.51975e+00 441 2016 9 2.89961e+01 1.03487e+00 608 2016 10 2.51417e+01 1.67491e+00 723 2016 11 2.08524e+01 2.07120e+00 314 2016 12 1.79081e+01 1.11729e+00 159 2017 1 1.69745e+01 2.62380e+00 168 2017 2 1.72581e+01 1.75370e+00 294 2017 3 1.88552e+01 2.70156e+00 565 2017 4 2.28969e+01 2.09819e+00 606 2017 5 2.46126e+01 2.07646e+00 597 2017 6 2.75160e+01 1.49118e+00 192 2017 7 2.98153e+01 1.52523e+00 689 2017 8 2.94648e+01 1.57372e+00 477 2017 9 2.74792e+01 1.85494e+00 613 2017 10 2.46940e+01 2.11439e+00 616 2017 11 1.99537e+01 2.05951e+00 518 2017 12 1.91668e+01 5.50995e-01 102 2018 1 1.46279e+01 8.82837e-01 46 2018 2 2.06137e+01 2.59962e+00 280 2018 3 1.85457e+01 2.11287e+00 554 2018 4 2.08596e+01 1.31169e+00 604 2018 5 2.62281e+01 2.02995e+00 657 2018 6 2.87074e+01 1.67726e+00 518 2018 7 2.99214e+01 1.46605e+00 587 2018 8 2.95456e+01 1.53582e+00 612 2018 9 2.92532e+01 1.47058e+00 568 2018 10 2.61481e+01 2.53921e+00 745 2018 11 2.04026e+01 2.21709e+00 133 2018 12 1.50586e+01 1.46443e+00 123 2019 1 1.55780e+01 1.66494e+00 172 2019 2 1.74525e+01 2.48613e+00 102 2019 3 1.78889e+01 1.75042e+00 401 2019 4 2.13548e+01 1.85038e+00 484 2019 5 2.73349e+01 2.26188e+00 794 2019 6 2.91396e+01 1.79560e+00 556 2019 7 3.01450e+01 1.26995e+00 583 2019 8 3.00945e+01 1.24719e+00 470 2019 9 2.94812e+01 1.41965e+00 812 2019 10 2.75869e+01 2.45908e+00 437 2019 11 1.85280e+01 1.24965e+00 222 2019 12 1.72069e+01 1.33593e+00 173 2020 1 1.56161e+01 1.42045e+00 241 2020 2 1.55860e+01 1.42597e+00 389 2020 3 2.17955e+01 3.36408e+00 477 2020 4 2.28674e+01 1.12605e+00 441 2020 5 2.46067e+01 2.12801e+00 717 2020 6 2.83658e+01 1.20141e+00 491 2020 7 2.96246e+01 1.37749e+00 452 2020 8 3.07026e+01 1.13056e+00 449 2020 9 2.88260e+01 2.17059e+00 418 2020 10 2.44624e+01 1.46120e+00 581 2020 11 2.10554e+01 1.62281e+00 501 2020 12 1.62142e+01 8.17883e-01 119 2021 1 1.55475e+01 1.34814e+00 176 2021 2 1.42598e+01 2.62544e+00 336 2021 3 1.77095e+01 2.23433e+00 365 2021 4 2.06625e+01 2.04432e+00 640 2021 5 2.51152e+01 1.82887e+00 607 2021 6 2.79385e+01 1.54908e+00 420 2021 7 2.98110e+01 1.35056e+00 413 2021 8 2.96947e+01 1.47350e+00 394 2021 9 2.74945e+01 1.69666e+00 566 2021 10 2.48142e+01 1.97575e+00 454 2021 11 1.81746e+01 1.47126e+00 647 2021 12 1.70822e+01 1.30337e+00 335 2022 1 1.51645e+01 2.85665e+00 280 2022 2 1.46416e+01 2.36239e+00 530 2022 3 1.82669e+01 1.70731e+00 671 2022 4 2.17907e+01 1.65422e+00 429 2022 5 2.63026e+01 1.28068e+00 667 2022 6 2.97301e+01 1.73104e+00 633 2022 7 3.00598e+01 1.66070e+00 519 2022 8 2.97498e+01 1.43012e+00 444 2022 9 2.82692e+01 1.95545e+00 711 2022 10 2.28188e+01 1.73007e+00 602 2022 11 2.05943e+01 2.34125e+00 476 2022 12 1.79651e+01 2.48187e+00 479 2023 1 1.58776e+01 2.22238e+00 549 2023 2 1.69320e+01 2.64145e+00 390 2023 3 1.99970e+01 2.53169e+00 381 2023 4 2.19204e+01 1.13391e+00 369 2023 5 2.56650e+01 2.21651e+00 564 2023 6 2.88843e+01 1.99052e+00 561 2023 7 3.05969e+01 1.51238e+00 619 2023 8 3.15662e+01 1.20217e+00 824 2023 9 2.90249e+01 1.46583e+00 636 2023 10 2.40399e+01 1.98589e+00 627 2023 11 1.86749e+01 1.61101e+00 416 2023 12 1.45103e+01 1.35988e+00 294 2024 1 1.27731e+01 1.53012e+00 332 2024 2 1.50297e+01 1.46389e+00 444 2024 3 1.89183e+01 1.09697e+00 378 2024 4 2.16257e+01 1.01762e+00 48