YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.81217e+01 3.89725e-01 32 2000 3 2.04062e+01 1.54262e+00 138 2000 4 2.20455e+01 1.59311e+00 128 2000 5 2.64133e+01 1.71858e+00 169 2000 6 2.88349e+01 9.08898e-01 128 2000 7 2.96521e+01 1.11571e+00 112 2000 8 2.91431e+01 5.47930e-01 45 2000 9 2.57376e+01 1.93294e+00 80 2000 10 2.34005e+01 1.33084e+00 184 2000 11 2.19000e+01 2.83250e+00 105 2000 12 1.70067e+01 1.06041e+00 32 2001 1 1.24033e+01 5.77431e-01 38 2001 2 1.80438e+01 1.63521e+00 56 2001 3 1.75329e+01 2.26321e+00 68 2001 4 2.12672e+01 2.35600e+00 160 2001 5 2.50626e+01 1.66257e+00 208 2001 6 2.71589e+01 1.04634e+00 52 2001 7 2.70066e+01 1.61904e+00 32 2001 8 2.81897e+01 2.06181e+00 171 2001 9 2.64956e+01 1.96069e+00 67 2001 10 2.15382e+01 2.28462e+00 120 2001 11 2.02070e+01 9.57924e-01 192 2001 12 1.96321e+01 2.52196e+00 130 2002 1 1.35070e+01 6.92731e-01 5 2002 2 1.45924e+01 1.08802e+00 92 2002 3 1.90435e+01 4.26914e+00 26 2002 4 2.40506e+01 2.54500e+00 144 2002 5 2.65575e+01 2.31765e+00 198 2002 6 2.83157e+01 8.49316e-01 128 2002 7 2.91989e+01 1.32836e+00 432 2002 8 2.92478e+01 1.29179e+00 546 2002 9 2.90110e+01 1.16706e+00 382 2002 10 2.68352e+01 2.09485e+00 468 2002 11 2.08483e+01 1.91278e+00 248 2002 12 1.52118e+01 1.29018e+00 119 2003 1 1.28581e+01 1.32227e+00 212 2003 2 1.50162e+01 1.54950e+00 278 2003 3 2.03287e+01 1.65905e+00 242 2003 4 2.14155e+01 2.29924e+00 589 2003 5 2.60128e+01 1.36784e+00 606 2003 6 2.83076e+01 1.45810e+00 424 2003 7 2.87811e+01 1.32621e+00 422 2003 8 2.81734e+01 1.17337e+00 486 2003 9 2.73627e+01 1.15312e+00 479 2003 10 2.32440e+01 1.17812e+00 541 2003 11 2.12700e+01 2.12585e+00 689 2003 12 1.51823e+01 9.81785e-01 93 2004 1 1.42032e+01 1.11784e+00 284 2004 2 1.35648e+01 1.63876e+00 160 2004 3 1.86855e+01 2.47272e+00 632 2004 4 2.11573e+01 2.39024e+00 612 2004 5 2.63699e+01 1.88943e+00 828 2004 6 2.91785e+01 1.35113e+00 549 2004 7 2.94695e+01 1.47370e+00 544 2004 8 2.94993e+01 1.86357e+00 582 2004 9 2.73714e+01 2.32251e+00 501 2004 10 2.49913e+01 1.67830e+00 570 2004 11 2.20600e+01 2.55076e+00 492 2004 12 1.65260e+01 1.96413e+00 124 2005 1 1.44195e+01 1.95400e+00 217 2005 2 1.53169e+01 1.40631e+00 351 2005 3 1.64561e+01 2.11394e+00 466 2005 4 2.02757e+01 1.52048e+00 511 2005 5 2.53459e+01 2.50297e+00 704 2005 6 2.84384e+01 1.55353e+00 540 2005 7 2.91785e+01 1.51956e+00 578 2005 8 2.93623e+01 1.34529e+00 488 2005 9 2.80877e+01 1.42929e+00 559 2005 10 2.54734e+01 1.67513e+00 539 2005 11 2.08885e+01 2.09717e+00 370 2005 12 1.61987e+01 1.90298e+00 191 2006 1 1.56501e+01 1.96452e+00 339 2006 2 1.51320e+01 1.82790e+00 350 2006 3 1.85980e+01 1.57736e+00 613 2006 4 2.33110e+01 2.06399e+00 734 2006 5 2.55370e+01 2.02251e+00 764 2006 6 2.89563e+01 1.57264e+00 738 2006 7 3.02820e+01 1.65180e+00 533 2006 8 3.01817e+01 1.32000e+00 648 2006 9 2.86102e+01 1.48186e+00 607 2006 10 2.43851e+01 2.71579e+00 632 2006 11 1.87964e+01 1.89090e+00 260 2006 12 1.68185e+01 1.59174e+00 159 2007 1 1.62088e+01 2.15368e+00 116 2007 2 1.40691e+01 2.17053e+00 354 2007 3 1.92745e+01 2.20388e+00 839 2007 4 2.11208e+01 2.38923e+00 586 2007 5 2.47973e+01 1.34508e+00 797 2007 6 2.80675e+01 2.20814e+00 567 2007 7 2.97818e+01 1.55707e+00 482 2007 8 3.04332e+01 1.59570e+00 636 2007 9 2.84640e+01 1.32745e+00 525 2007 10 2.54396e+01 1.91408e+00 457 2007 11 1.93578e+01 1.26264e+00 471 2007 12 1.82278e+01 1.68453e+00 278 2008 1 1.49942e+01 1.67295e+00 76 2008 2 1.67703e+01 1.69383e+00 366 2008 3 1.77299e+01 2.18861e+00 497 2008 4 2.18011e+01 2.08239e+00 522 2008 5 2.51158e+01 2.05938e+00 751 2008 6 2.93428e+01 1.13767e+00 696 2008 7 2.93344e+01 1.34022e+00 552 2008 8 2.82963e+01 1.33256e+00 372 2008 9 2.73708e+01 2.02467e+00 556 2008 10 2.36983e+01 2.04487e+00 574 2008 11 1.79634e+01 1.92108e+00 410 2008 12 1.63630e+01 1.95648e+00 178 2009 1 1.61401e+01 1.85942e+00 344 2009 2 1.46975e+01 1.85648e+00 406 2009 3 1.84573e+01 2.85708e+00 437 2009 4 2.13131e+01 2.22062e+00 551 2009 5 2.60789e+01 1.38720e+00 670 2009 6 2.86032e+01 1.77286e+00 663 2009 7 2.87607e+01 1.55517e+00 528 2009 8 2.92243e+01 1.42046e+00 424 2009 9 2.82832e+01 1.12510e+00 476 2009 10 2.58102e+01 3.01539e+00 509 2009 11 1.85135e+01 1.55163e+00 335 2009 12 1.10986e+01 4.18494e-01 40 2010 1 1.42035e+01 1.85441e+00 169 2010 2 1.14864e+01 1.50088e+00 264 2010 3 1.52390e+01 2.36287e+00 446 2010 4 2.15270e+01 1.62759e+00 671 2010 5 2.68704e+01 2.10939e+00 717 2010 6 3.06815e+01 1.32503e+00 737 2010 7 2.99294e+01 1.66604e+00 579 2010 8 2.96296e+01 1.40690e+00 333 2010 9 2.89279e+01 1.75585e+00 709 2010 10 2.38155e+01 1.40647e+00 840 2010 11 1.99320e+01 1.77157e+00 535 2010 12 1.44078e+01 2.10506e+00 209 2011 1 1.19730e+01 1.03929e+00 298 2011 2 1.56448e+01 3.40758e+00 278 2011 3 1.98384e+01 2.15965e+00 572 2011 4 2.33678e+01 1.82945e+00 830 2011 5 2.58936e+01 2.28509e+00 958 2011 6 2.95984e+01 1.42151e+00 660 2011 7 2.99959e+01 1.26932e+00 392 2011 8 3.04855e+01 1.01738e+00 716 2011 9 2.75797e+01 1.17056e+00 633 2011 10 2.27649e+01 2.03274e+00 543 2011 11 1.85840e+01 1.50389e+00 426 2011 12 1.61007e+01 1.25671e+00 238 2012 1 1.56357e+01 2.20181e+00 417 2012 2 1.55816e+01 1.45017e+00 122 2012 3 2.19580e+01 2.21464e+00 678 2012 4 2.32870e+01 1.69684e+00 811 2012 5 2.74118e+01 1.41265e+00 743 2012 6 2.74155e+01 1.49506e+00 594 2012 7 2.86182e+01 1.44544e+00 560 2012 8 2.90809e+01 1.27395e+00 509 2012 9 2.76289e+01 1.49844e+00 611 2012 10 2.48034e+01 1.35723e+00 619 2012 11 1.82994e+01 1.62593e+00 541 2012 12 1.77387e+01 1.42999e+00 220 2013 1 1.72486e+01 1.78604e+00 302 2013 2 1.58847e+01 1.70561e+00 285 2013 3 1.60626e+01 1.59101e+00 479 2013 4 2.11266e+01 1.62363e+00 520 2013 5 2.45936e+01 2.54554e+00 593 2013 6 2.83614e+01 1.63934e+00 513 2013 7 2.74269e+01 1.63604e+00 349 2013 8 2.91702e+01 1.76231e+00 419 2013 9 2.88389e+01 1.48547e+00 671 2013 10 2.44810e+01 2.11498e+00 626 2013 11 2.05596e+01 2.03392e+00 276 2013 12 1.73520e+01 2.22169e+00 223 2014 1 1.29600e+01 1.24007e+00 212 2014 2 1.45600e+01 2.29182e+00 292 2014 3 1.73777e+01 1.62714e+00 470 2014 4 2.08174e+01 2.14610e+00 502 2014 5 2.48120e+01 1.91894e+00 654 2014 6 2.86983e+01 1.49768e+00 592 2014 7 2.90880e+01 1.27279e+00 661 2014 8 3.00909e+01 1.44692e+00 691 2014 9 2.87240e+01 2.21600e+00 555 2014 10 2.48999e+01 2.01290e+00 766 2014 11 1.64645e+01 1.96697e+00 350 2014 12 1.58701e+01 1.40211e+00 291 2015 1 1.44653e+01 1.11898e+00 274 2015 2 1.38238e+01 1.58466e+00 393 2015 3 1.90622e+01 2.11999e+00 421 2015 4 2.28000e+01 1.93953e+00 382 2015 5 2.62070e+01 2.43366e+00 869 2015 6 2.93823e+01 1.66666e+00 516 2015 7 2.92734e+01 1.98622e+00 534 2015 8 2.98906e+01 1.52373e+00 559 2015 9 2.74017e+01 1.20715e+00 256 2015 10 2.38714e+01 1.59029e+00 639 2015 11 2.20577e+01 3.13744e+00 371 2015 12 1.75230e+01 1.79602e+00 270 2016 1 1.37546e+01 9.68621e-01 181 2016 2 1.48099e+01 1.85101e+00 357 2016 3 1.90329e+01 2.13592e+00 347 2016 4 2.18550e+01 1.73673e+00 595 2016 5 2.53532e+01 1.71709e+00 670 2016 6 2.95773e+01 1.52934e+00 616 2016 7 3.11321e+01 1.36203e+00 698 2016 8 3.00695e+01 1.46969e+00 545 2016 9 2.89654e+01 1.10575e+00 594 2016 10 2.53336e+01 1.62523e+00 803 2016 11 2.05232e+01 2.23748e+00 464 2016 12 1.79425e+01 1.34386e+00 296 2017 1 1.68237e+01 1.91544e+00 267 2017 2 1.82018e+01 2.13421e+00 528 2017 3 1.91781e+01 2.80434e+00 643 2017 4 2.33211e+01 1.78567e+00 596 2017 5 2.49571e+01 2.07965e+00 574 2017 6 2.80612e+01 1.97963e+00 311 2017 7 2.96613e+01 1.65966e+00 499 2017 8 3.00338e+01 1.33568e+00 437 2017 9 2.79212e+01 1.69528e+00 500 2017 10 2.44742e+01 2.40628e+00 653 2017 11 2.01968e+01 1.93897e+00 608 2017 12 1.81965e+01 2.46838e+00 172 2018 1 1.30299e+01 1.57499e+00 134 2018 2 1.98359e+01 2.72630e+00 333 2018 3 1.88369e+01 2.30571e+00 621 2018 4 2.16620e+01 1.47130e+00 694 2018 5 2.59216e+01 2.12635e+00 726 2018 6 2.93243e+01 1.32773e+00 440 2018 7 2.98872e+01 1.30646e+00 484 2018 8 2.93326e+01 1.52319e+00 572 2018 9 2.99959e+01 1.45836e+00 671 2018 10 2.62038e+01 2.50391e+00 724 2018 11 1.96952e+01 3.20649e+00 144 2018 12 1.53862e+01 2.15985e+00 202 2019 1 1.44605e+01 1.73168e+00 398 2019 2 1.68040e+01 2.66141e+00 205 2019 3 1.81669e+01 1.93280e+00 486 2019 4 2.18403e+01 2.20223e+00 529 2019 5 2.78075e+01 2.06898e+00 833 2019 6 2.90913e+01 1.86021e+00 475 2019 7 2.99441e+01 1.63369e+00 490 2019 8 3.02786e+01 9.16677e-01 462 2019 9 2.95777e+01 1.39074e+00 810 2019 10 2.68722e+01 2.35656e+00 611 2019 11 1.91052e+01 1.84840e+00 410 2019 12 1.69132e+01 1.55219e+00 206 2020 1 1.57777e+01 1.84536e+00 448 2020 2 1.56075e+01 1.67704e+00 393 2020 3 2.19612e+01 3.72271e+00 541 2020 4 2.31654e+01 1.17998e+00 466 2020 5 2.44592e+01 2.06002e+00 643 2020 6 2.89763e+01 1.53349e+00 452 2020 7 2.97126e+01 1.13086e+00 426 2020 8 3.07724e+01 9.88699e-01 417 2020 9 2.86805e+01 2.37664e+00 434 2020 10 2.51475e+01 1.41685e+00 498 2020 11 2.13754e+01 1.81821e+00 655 2020 12 1.54236e+01 1.54865e+00 473 2021 1 1.49019e+01 1.81523e+00 297 2021 2 1.61263e+01 2.17238e+00 322 2021 3 1.84819e+01 1.80486e+00 448 2021 4 2.13277e+01 2.00858e+00 605 2021 5 2.50793e+01 2.04363e+00 651 2021 6 2.81259e+01 1.78117e+00 305 2021 7 2.97955e+01 1.44062e+00 476 2021 8 2.94386e+01 1.69669e+00 470 2021 9 2.75477e+01 1.34886e+00 467 2021 10 2.57482e+01 1.48606e+00 490 2021 11 1.87451e+01 1.66939e+00 561 2021 12 1.80996e+01 2.03437e+00 420 2022 1 1.54147e+01 3.65835e+00 526 2022 2 1.58433e+01 3.46341e+00 458 2022 3 1.96320e+01 1.59555e+00 664 2022 4 2.24782e+01 1.58405e+00 370 2022 5 2.64285e+01 1.54191e+00 707 2022 6 2.98589e+01 1.78565e+00 681 2022 7 3.02774e+01 1.54867e+00 532 2022 8 3.02937e+01 1.61827e+00 408 2022 9 2.83110e+01 1.70878e+00 488 2022 10 2.33403e+01 2.03583e+00 742 2022 11 2.11410e+01 2.34801e+00 426 2022 12 1.73485e+01 3.60590e+00 542 2023 1 1.58572e+01 1.59567e+00 648 2023 2 1.78770e+01 2.61756e+00 548 2023 3 2.08556e+01 2.32762e+00 537 2023 4 2.27244e+01 1.22774e+00 505 2023 5 2.46984e+01 1.90125e+00 521 2023 6 2.81729e+01 1.87359e+00 564 2023 7 3.03886e+01 1.41406e+00 527 2023 8 3.09958e+01 9.96827e-01 660 2023 9 2.95325e+01 1.59381e+00 654 2023 10 2.35936e+01 1.76071e+00 694 2023 11 1.97941e+01 1.94231e+00 408 2023 12 1.42013e+01 1.29923e+00 352 2024 1 1.35584e+01 1.44717e+00 303 2024 2 1.54484e+01 1.85931e+00 480 2024 3 1.97352e+01 1.57925e+00 372 2024 4 2.07982e+01 7.20931e-01 48