YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.77984e+01 4.15978e-02 16 2000 3 2.00895e+01 1.04879e+00 144 2000 4 2.24299e+01 1.12581e+00 131 2000 5 2.60976e+01 2.44775e+00 148 2000 6 2.87493e+01 7.20622e-01 156 2000 7 2.97573e+01 1.34529e+00 192 2000 8 2.97888e+01 6.38455e-01 64 2000 9 2.73357e+01 1.39219e+00 114 2000 10 2.27433e+01 1.39838e+00 218 2000 11 2.18552e+01 2.73899e+00 144 2000 12 1.74181e+01 3.95235e-02 16 2001 1 1.31307e+01 2.12851e-02 7 2001 2 1.73574e+01 1.07023e+00 66 2001 3 1.76867e+01 2.10512e+00 109 2001 4 2.15500e+01 2.73908e+00 176 2001 5 2.50907e+01 1.34119e+00 224 2001 6 2.65282e+01 2.00908e+00 22 2001 7 2.89160e+01 8.32429e-01 80 2001 8 2.82778e+01 1.99984e+00 141 2001 9 2.70518e+01 1.88691e+00 169 2001 10 2.24490e+01 1.80433e+00 237 2001 11 1.95104e+01 8.64826e-01 192 2001 12 1.86559e+01 1.76814e+00 221 2002 1 1.63075e+01 2.83941e-02 16 2002 2 1.49258e+01 7.32089e-02 32 2002 3 1.50806e+01 2.65988e+00 47 2002 4 2.30560e+01 2.54108e+00 96 2002 5 2.57570e+01 2.03998e+00 155 2002 6 2.82484e+01 1.06018e+00 125 2002 7 2.98083e+01 1.43885e+00 522 2002 8 2.92740e+01 1.09118e+00 514 2002 9 2.83317e+01 1.19785e+00 469 2002 10 2.65619e+01 2.08465e+00 562 2002 11 1.94170e+01 2.15160e+00 341 2002 12 1.50034e+01 1.22695e+00 253 2003 1 1.33008e+01 9.37676e-01 201 2003 2 1.49039e+01 1.50023e+00 282 2003 3 2.04195e+01 1.76394e+00 369 2003 4 2.12282e+01 2.38349e+00 463 2003 5 2.56779e+01 1.23442e+00 561 2003 6 2.81360e+01 1.54142e+00 420 2003 7 2.87136e+01 9.02884e-01 383 2003 8 2.88697e+01 1.32890e+00 508 2003 9 2.75657e+01 1.47113e+00 703 2003 10 2.31203e+01 1.11458e+00 624 2003 11 2.13836e+01 1.50647e+00 666 2003 12 1.56345e+01 1.02106e+00 109 2004 1 1.40454e+01 1.14833e+00 154 2004 2 1.37513e+01 1.62376e+00 165 2004 3 1.87650e+01 1.57218e+00 631 2004 4 2.05304e+01 1.88184e+00 551 2004 5 2.60297e+01 2.23121e+00 804 2004 6 2.82386e+01 1.47687e+00 544 2004 7 2.98619e+01 1.09617e+00 673 2004 8 2.88136e+01 1.50947e+00 609 2004 9 2.71526e+01 1.91728e+00 568 2004 10 2.47966e+01 1.84206e+00 550 2004 11 2.12338e+01 2.14325e+00 442 2004 12 1.70140e+01 1.65820e+00 245 2005 1 1.38940e+01 1.71579e+00 218 2005 2 1.45960e+01 1.44466e+00 291 2005 3 1.64811e+01 2.00910e+00 433 2005 4 2.04878e+01 1.38617e+00 624 2005 5 2.49542e+01 2.45220e+00 820 2005 6 2.80732e+01 1.70236e+00 641 2005 7 2.93791e+01 1.76985e+00 615 2005 8 2.94366e+01 1.49815e+00 548 2005 9 2.79991e+01 9.61602e-01 763 2005 10 2.43377e+01 2.56634e+00 850 2005 11 1.96664e+01 2.08212e+00 497 2005 12 1.59771e+01 7.17954e-01 128 2006 1 1.54737e+01 1.19257e+00 320 2006 2 1.44518e+01 1.36025e+00 370 2006 3 1.81102e+01 1.47367e+00 568 2006 4 2.27204e+01 2.04066e+00 701 2006 5 2.52215e+01 1.96318e+00 699 2006 6 2.85095e+01 1.66808e+00 700 2006 7 2.98699e+01 1.13938e+00 537 2006 8 3.01065e+01 1.03562e+00 690 2006 9 2.80325e+01 1.42725e+00 731 2006 10 2.43128e+01 2.48446e+00 585 2006 11 1.85912e+01 1.74003e+00 510 2006 12 1.53391e+01 1.40223e+00 199 2007 1 1.43395e+01 1.59099e+00 174 2007 2 1.37401e+01 1.60374e+00 236 2007 3 1.79053e+01 2.04811e+00 637 2007 4 2.08091e+01 1.66461e+00 567 2007 5 2.43983e+01 1.24434e+00 856 2007 6 2.82693e+01 1.35737e+00 609 2007 7 2.90846e+01 1.18975e+00 446 2007 8 3.00282e+01 1.24008e+00 710 2007 9 2.84349e+01 1.26820e+00 675 2007 10 2.52322e+01 1.94492e+00 570 2007 11 1.92550e+01 1.26752e+00 579 2007 12 1.75603e+01 1.58457e+00 343 2008 1 1.44660e+01 1.07215e+00 241 2008 2 1.62329e+01 1.39354e+00 351 2008 3 1.75741e+01 1.45047e+00 578 2008 4 2.17094e+01 1.83514e+00 551 2008 5 2.50466e+01 2.31120e+00 759 2008 6 2.92089e+01 1.39255e+00 680 2008 7 2.91889e+01 1.39381e+00 594 2008 8 2.85557e+01 1.08717e+00 527 2008 9 2.70337e+01 1.57701e+00 664 2008 10 2.33006e+01 2.02098e+00 707 2008 11 1.88484e+01 1.11052e+00 449 2008 12 1.59325e+01 1.27089e+00 209 2009 1 1.52462e+01 1.66002e+00 264 2009 2 1.40163e+01 1.39611e+00 308 2009 3 1.85919e+01 2.18831e+00 475 2009 4 2.16079e+01 2.03849e+00 596 2009 5 2.54481e+01 2.01480e+00 469 2009 6 2.91108e+01 1.62434e+00 725 2009 7 2.91427e+01 1.48827e+00 605 2009 8 2.91105e+01 1.21071e+00 461 2009 9 2.78434e+01 1.20015e+00 679 2009 10 2.47705e+01 2.92332e+00 498 2009 11 1.94548e+01 1.82325e+00 423 2009 12 1.40601e+01 1.55081e+00 159 2010 1 1.49998e+01 1.31047e+00 101 2010 2 1.20031e+01 9.96170e-01 253 2010 3 1.49634e+01 2.21796e+00 407 2010 4 2.14941e+01 1.51338e+00 711 2010 5 2.65780e+01 2.15970e+00 718 2010 6 3.02925e+01 1.53054e+00 747 2010 7 2.98621e+01 1.50380e+00 789 2010 8 2.99083e+01 1.25126e+00 414 2010 9 2.91277e+01 1.25657e+00 810 2010 10 2.35312e+01 1.19490e+00 914 2010 11 1.91448e+01 1.23647e+00 628 2010 12 1.55583e+01 2.34648e+00 329 2011 1 1.18790e+01 8.26701e-01 254 2011 2 1.44710e+01 3.36481e+00 281 2011 3 1.93965e+01 2.05610e+00 619 2011 4 2.31945e+01 1.67929e+00 725 2011 5 2.51358e+01 1.91738e+00 957 2011 6 2.98159e+01 1.01299e+00 789 2011 7 2.99705e+01 1.27184e+00 597 2011 8 3.06113e+01 1.19605e+00 739 2011 9 2.70045e+01 9.93048e-01 729 2011 10 2.33310e+01 1.94780e+00 758 2011 11 1.84798e+01 9.27053e-01 431 2011 12 1.56352e+01 5.98112e-01 180 2012 1 1.51692e+01 1.18656e+00 290 2012 2 1.57864e+01 1.60269e+00 157 2012 3 2.09771e+01 2.66772e+00 510 2012 4 2.27252e+01 1.30917e+00 761 2012 5 2.67763e+01 1.60953e+00 833 2012 6 2.78590e+01 9.04564e-01 613 2012 7 2.90779e+01 1.01839e+00 395 2012 8 2.92230e+01 1.22099e+00 398 2012 9 2.72229e+01 1.59327e+00 722 2012 10 2.39609e+01 1.69177e+00 817 2012 11 1.80490e+01 1.40065e+00 496 2012 12 1.74134e+01 1.25126e+00 290 2013 1 1.58215e+01 1.33646e+00 222 2013 2 1.60588e+01 1.03433e+00 294 2013 3 1.62415e+01 1.39688e+00 586 2013 4 2.07447e+01 1.52913e+00 405 2013 5 2.43822e+01 2.54742e+00 726 2013 6 2.85258e+01 1.16619e+00 576 2013 7 2.86930e+01 1.12877e+00 367 2013 8 2.82414e+01 2.11141e+00 476 2013 9 2.89542e+01 1.56869e+00 674 2013 10 2.37861e+01 2.34284e+00 543 2013 11 2.01347e+01 1.87522e+00 371 2013 12 1.69149e+01 1.32592e+00 126 2014 1 1.21553e+01 8.52396e-01 203 2014 2 1.43074e+01 2.19470e+00 297 2014 3 1.69283e+01 1.68643e+00 392 2014 4 2.00349e+01 1.94639e+00 499 2014 5 2.47551e+01 1.86971e+00 645 2014 6 2.89773e+01 1.70394e+00 730 2014 7 2.89209e+01 1.38850e+00 742 2014 8 2.95420e+01 1.31333e+00 616 2014 9 2.89503e+01 2.02156e+00 521 2014 10 2.48345e+01 1.74213e+00 895 2014 11 1.75456e+01 2.30084e+00 525 2014 12 1.65798e+01 1.47349e+00 250 2015 1 1.47442e+01 8.92884e-01 219 2015 2 1.35496e+01 1.03044e+00 345 2015 3 1.93336e+01 2.51477e+00 322 2015 4 2.28924e+01 1.17564e+00 333 2015 5 2.62905e+01 2.17194e+00 706 2015 6 2.95540e+01 1.29486e+00 708 2015 7 2.92426e+01 1.72893e+00 552 2015 8 2.96579e+01 1.25740e+00 589 2015 9 2.80600e+01 1.37523e+00 481 2015 10 2.36615e+01 1.37796e+00 552 2015 11 2.10662e+01 2.44729e+00 508 2015 12 1.80800e+01 1.50228e+00 248 2016 1 1.44015e+01 1.13713e+00 183 2016 2 1.46900e+01 1.80612e+00 499 2016 3 1.83204e+01 1.71218e+00 431 2016 4 2.14273e+01 1.88436e+00 615 2016 5 2.50336e+01 1.71467e+00 558 2016 6 2.89362e+01 1.26991e+00 583 2016 7 3.05473e+01 1.04239e+00 752 2016 8 2.99041e+01 1.40150e+00 517 2016 9 2.91532e+01 1.05075e+00 653 2016 10 2.54288e+01 1.34909e+00 758 2016 11 2.06011e+01 1.92301e+00 500 2016 12 1.78703e+01 1.29306e+00 306 2017 1 1.70062e+01 1.51303e+00 237 2017 2 1.77820e+01 1.78245e+00 425 2017 3 1.89004e+01 2.40710e+00 585 2017 4 2.31959e+01 1.66759e+00 786 2017 5 2.47084e+01 1.66106e+00 640 2017 6 2.73995e+01 1.45395e+00 342 2017 7 2.99886e+01 1.46021e+00 638 2017 8 3.00006e+01 1.62970e+00 443 2017 9 2.74678e+01 1.81984e+00 571 2017 10 2.48349e+01 2.35451e+00 772 2017 11 2.05327e+01 1.67430e+00 523 2017 12 1.61182e+01 2.17077e+00 193 2018 1 1.38492e+01 5.03776e-01 90 2018 2 1.97344e+01 2.70896e+00 323 2018 3 1.88887e+01 2.20017e+00 656 2018 4 2.13152e+01 9.92576e-01 625 2018 5 2.59179e+01 1.87124e+00 618 2018 6 2.95358e+01 1.65930e+00 631 2018 7 2.97405e+01 1.34303e+00 582 2018 8 2.96552e+01 1.57152e+00 532 2018 9 2.95470e+01 1.37349e+00 731 2018 10 2.64862e+01 2.57910e+00 749 2018 11 2.14649e+01 2.73431e+00 82 2018 12 1.54034e+01 1.57329e+00 226 2019 1 1.58314e+01 1.71534e+00 266 2019 2 1.75191e+01 2.34000e+00 105 2019 3 1.82177e+01 1.30203e+00 533 2019 4 2.17995e+01 1.44070e+00 490 2019 5 2.73753e+01 2.20644e+00 836 2019 6 2.90047e+01 1.35744e+00 455 2019 7 3.00450e+01 1.10723e+00 591 2019 8 2.97657e+01 1.12060e+00 452 2019 9 2.96659e+01 1.08668e+00 905 2019 10 2.73879e+01 2.43529e+00 553 2019 11 1.91565e+01 1.98714e+00 327 2019 12 1.66888e+01 1.36127e+00 272 2020 1 1.61982e+01 1.43596e+00 380 2020 2 1.58916e+01 1.35301e+00 392 2020 3 2.19446e+01 3.60528e+00 592 2020 4 2.30926e+01 9.42732e-01 406 2020 5 2.47398e+01 1.63345e+00 675 2020 6 2.82049e+01 1.11513e+00 515 2020 7 2.97620e+01 1.14669e+00 493 2020 8 3.05429e+01 8.94653e-01 474 2020 9 2.87766e+01 2.25910e+00 419 2020 10 2.44958e+01 1.12911e+00 729 2020 11 2.13257e+01 1.57945e+00 702 2020 12 1.74069e+01 1.66354e+00 186 2021 1 1.53962e+01 9.08712e-01 212 2021 2 1.47597e+01 1.97995e+00 385 2021 3 1.82820e+01 1.98452e+00 426 2021 4 2.08293e+01 1.57638e+00 595 2021 5 2.51404e+01 1.52804e+00 640 2021 6 2.78371e+01 1.02510e+00 395 2021 7 2.99749e+01 1.45702e+00 481 2021 8 3.06471e+01 1.14672e+00 481 2021 9 2.76077e+01 1.35782e+00 531 2021 10 2.51002e+01 1.71326e+00 550 2021 11 1.84645e+01 1.36276e+00 683 2021 12 1.73566e+01 1.37235e+00 451 2022 1 1.47051e+01 1.97827e+00 362 2022 2 1.52989e+01 2.31694e+00 444 2022 3 1.86165e+01 1.16499e+00 763 2022 4 2.25017e+01 1.29409e+00 528 2022 5 2.60460e+01 9.99789e-01 624 2022 6 2.98687e+01 1.48223e+00 644 2022 7 3.00760e+01 1.21380e+00 575 2022 8 3.03615e+01 1.20381e+00 409 2022 9 2.82232e+01 1.24540e+00 740 2022 10 2.31022e+01 1.56963e+00 784 2022 11 2.09314e+01 2.36235e+00 451 2022 12 1.84590e+01 1.79335e+00 381 2023 1 1.58992e+01 1.15538e+00 604 2023 2 1.75250e+01 2.16629e+00 454 2023 3 1.96254e+01 2.15233e+00 369 2023 4 2.20489e+01 1.22242e+00 516 2023 5 2.51441e+01 2.10598e+00 551 2023 6 2.86467e+01 1.87810e+00 541 2023 7 3.06969e+01 1.28862e+00 595 2023 8 3.14001e+01 9.15067e-01 851 2023 9 2.89567e+01 1.07736e+00 655 2023 10 2.37599e+01 2.00033e+00 797 2023 11 1.94743e+01 1.50139e+00 614 2023 12 1.50077e+01 1.35212e+00 295 2024 1 1.32870e+01 1.06975e+00 320 2024 2 1.51077e+01 1.40482e+00 457 2024 3 1.87778e+01 1.01584e+00 441 2024 4 2.14681e+01 7.74898e-01 48