YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.84330e+01 2.87356e-01 32 2000 3 2.05529e+01 9.96762e-01 144 2000 4 2.17379e+01 1.75730e+00 102 2000 5 2.63056e+01 2.04484e+00 172 2000 6 2.86904e+01 9.51530e-01 112 2000 7 2.99472e+01 1.15028e+00 120 2000 8 2.97820e+01 8.02853e-01 64 2000 9 2.63434e+01 1.46126e+00 96 2000 10 2.28793e+01 1.45110e+00 208 2000 11 2.05331e+01 2.75741e+00 119 2000 12 1.69531e+01 3.93658e-01 29 2001 1 1.20725e+01 2.94583e-01 24 2001 2 1.78540e+01 1.40043e+00 66 2001 3 1.63740e+01 1.52387e+00 49 2001 4 2.12991e+01 2.27481e+00 150 2001 5 2.55317e+01 1.63903e+00 220 2001 6 2.72820e+01 9.05647e-01 64 2001 7 2.57272e+01 7.59311e-02 16 2001 8 2.87427e+01 1.68499e+00 164 2001 9 2.67972e+01 1.20999e+00 94 2001 10 2.16121e+01 1.83662e+00 128 2001 11 1.97131e+01 1.23180e+00 148 2001 12 1.98686e+01 1.95250e+00 160 2002 1 1.30330e+01 3.10807e-02 5 2002 2 1.49823e+01 1.21976e+00 91 2002 3 1.76618e+01 4.00006e+00 77 2002 4 2.44038e+01 2.42714e+00 158 2002 5 2.62593e+01 1.71913e+00 164 2002 6 2.80081e+01 1.33498e+00 108 2002 7 2.89449e+01 1.62249e+00 450 2002 8 2.92480e+01 1.17026e+00 600 2002 9 2.86236e+01 8.99178e-01 412 2002 10 2.67231e+01 1.99710e+00 427 2002 11 2.04037e+01 2.08492e+00 363 2002 12 1.48306e+01 9.56401e-01 170 2003 1 1.29447e+01 1.42323e+00 356 2003 2 1.46517e+01 1.52992e+00 299 2003 3 1.97731e+01 1.61132e+00 234 2003 4 2.12269e+01 2.34690e+00 610 2003 5 2.62216e+01 1.19680e+00 547 2003 6 2.83536e+01 1.33081e+00 464 2003 7 2.89769e+01 1.38340e+00 393 2003 8 2.83751e+01 1.12156e+00 406 2003 9 2.76593e+01 1.04299e+00 456 2003 10 2.32161e+01 1.14483e+00 593 2003 11 2.11665e+01 1.91545e+00 678 2003 12 1.49323e+01 1.53753e+00 175 2004 1 1.37167e+01 1.46663e+00 339 2004 2 1.36259e+01 1.31708e+00 187 2004 3 1.86866e+01 2.13479e+00 643 2004 4 2.08203e+01 2.00937e+00 653 2004 5 2.63467e+01 1.98400e+00 894 2004 6 2.90824e+01 1.05259e+00 594 2004 7 2.92034e+01 1.43133e+00 580 2004 8 2.96159e+01 1.40549e+00 532 2004 9 2.72361e+01 2.02685e+00 541 2004 10 2.49556e+01 1.68583e+00 720 2004 11 2.17835e+01 2.62689e+00 536 2004 12 1.65117e+01 1.84175e+00 203 2005 1 1.35260e+01 1.31414e+00 200 2005 2 1.48507e+01 1.15425e+00 244 2005 3 1.67419e+01 1.80432e+00 475 2005 4 2.01915e+01 1.36414e+00 536 2005 5 2.47892e+01 2.61909e+00 786 2005 6 2.83626e+01 1.28769e+00 575 2005 7 2.93448e+01 1.74705e+00 604 2005 8 2.91420e+01 1.69902e+00 602 2005 9 2.76807e+01 1.75714e+00 628 2005 10 2.51115e+01 2.02619e+00 538 2005 11 2.06897e+01 1.95344e+00 360 2005 12 1.53677e+01 2.11028e+00 244 2006 1 1.55226e+01 1.62570e+00 404 2006 2 1.49010e+01 1.68362e+00 450 2006 3 1.86543e+01 1.36425e+00 703 2006 4 2.30333e+01 2.45930e+00 754 2006 5 2.53634e+01 1.83814e+00 748 2006 6 2.84571e+01 1.45013e+00 769 2006 7 3.00371e+01 1.41160e+00 544 2006 8 3.03846e+01 1.07577e+00 727 2006 9 2.87595e+01 1.52809e+00 584 2006 10 2.45843e+01 2.23231e+00 695 2006 11 1.90693e+01 1.60337e+00 319 2006 12 1.64267e+01 1.48618e+00 141 2007 1 1.43804e+01 1.28743e+00 128 2007 2 1.39314e+01 1.57451e+00 323 2007 3 1.89805e+01 2.09076e+00 705 2007 4 2.07733e+01 2.21484e+00 584 2007 5 2.45127e+01 9.09901e-01 770 2007 6 2.77255e+01 1.80819e+00 592 2007 7 2.96384e+01 1.32078e+00 541 2007 8 3.03174e+01 1.32349e+00 567 2007 9 2.81045e+01 1.43837e+00 509 2007 10 2.59312e+01 1.37720e+00 407 2007 11 1.90794e+01 1.34907e+00 520 2007 12 1.74554e+01 1.13784e+00 320 2008 1 1.52202e+01 1.43339e+00 143 2008 2 1.65313e+01 1.31259e+00 444 2008 3 1.79285e+01 1.80261e+00 586 2008 4 2.17494e+01 1.72027e+00 545 2008 5 2.50103e+01 2.09493e+00 664 2008 6 2.86800e+01 1.41889e+00 634 2008 7 2.90177e+01 1.02998e+00 552 2008 8 2.85570e+01 9.22859e-01 351 2008 9 2.74994e+01 2.15939e+00 509 2008 10 2.38323e+01 1.98466e+00 659 2008 11 1.73866e+01 2.03450e+00 431 2008 12 1.58012e+01 1.45518e+00 315 2009 1 1.55087e+01 2.07911e+00 386 2009 2 1.44330e+01 1.98725e+00 498 2009 3 1.86100e+01 2.31359e+00 537 2009 4 2.12320e+01 2.32931e+00 643 2009 5 2.56840e+01 1.32459e+00 559 2009 6 2.83571e+01 1.98501e+00 660 2009 7 2.86261e+01 1.24330e+00 603 2009 8 2.92997e+01 1.65996e+00 417 2009 9 2.81642e+01 1.25912e+00 521 2009 10 2.53102e+01 3.11518e+00 609 2009 11 1.88208e+01 1.60072e+00 266 2009 12 1.31594e+01 2.67313e+00 98 2010 1 1.37410e+01 1.16277e+00 141 2010 2 1.13377e+01 1.60680e+00 260 2010 3 1.49869e+01 2.29255e+00 506 2010 4 2.17369e+01 1.57957e+00 634 2010 5 2.67944e+01 2.02694e+00 744 2010 6 3.02196e+01 1.34714e+00 702 2010 7 2.97296e+01 1.22315e+00 597 2010 8 2.92103e+01 1.76500e+00 370 2010 9 2.88994e+01 1.58232e+00 678 2010 10 2.40090e+01 1.25723e+00 793 2010 11 1.96339e+01 1.52684e+00 557 2010 12 1.43591e+01 2.63839e+00 372 2011 1 1.16141e+01 1.06980e+00 340 2011 2 1.49670e+01 2.84166e+00 223 2011 3 1.93139e+01 2.02492e+00 594 2011 4 2.33683e+01 1.79295e+00 747 2011 5 2.56349e+01 1.95491e+00 962 2011 6 2.94439e+01 1.71435e+00 649 2011 7 2.98714e+01 1.08797e+00 388 2011 8 3.04380e+01 8.00322e-01 743 2011 9 2.73577e+01 1.11031e+00 565 2011 10 2.30606e+01 2.13212e+00 658 2011 11 1.84267e+01 9.77715e-01 417 2011 12 1.60895e+01 8.81329e-01 288 2012 1 1.58323e+01 1.87562e+00 400 2012 2 1.52152e+01 1.89610e+00 111 2012 3 2.18391e+01 2.17022e+00 564 2012 4 2.29191e+01 1.48081e+00 761 2012 5 2.69111e+01 1.53134e+00 820 2012 6 2.74770e+01 1.15522e+00 532 2012 7 2.88410e+01 1.71136e+00 406 2012 8 2.86608e+01 1.40995e+00 442 2012 9 2.77773e+01 1.67397e+00 568 2012 10 2.46367e+01 1.69594e+00 651 2012 11 1.81408e+01 1.43813e+00 545 2012 12 1.70159e+01 1.23161e+00 222 2013 1 1.64020e+01 1.66195e+00 249 2013 2 1.59925e+01 1.48252e+00 308 2013 3 1.63233e+01 1.74719e+00 508 2013 4 2.09605e+01 1.43049e+00 502 2013 5 2.44421e+01 2.45984e+00 589 2013 6 2.84480e+01 1.62501e+00 494 2013 7 2.77315e+01 1.48861e+00 365 2013 8 2.88362e+01 1.92067e+00 467 2013 9 2.91762e+01 1.43290e+00 695 2013 10 2.45662e+01 1.93327e+00 629 2013 11 1.97882e+01 2.60384e+00 355 2013 12 1.70354e+01 2.11983e+00 280 2014 1 1.25753e+01 1.25868e+00 228 2014 2 1.46880e+01 1.87109e+00 267 2014 3 1.69273e+01 1.57519e+00 508 2014 4 2.05718e+01 1.58550e+00 489 2014 5 2.49775e+01 1.92203e+00 608 2014 6 2.86981e+01 1.41603e+00 635 2014 7 2.89681e+01 1.09319e+00 629 2014 8 2.95781e+01 1.38598e+00 678 2014 9 2.88206e+01 1.78047e+00 487 2014 10 2.48006e+01 1.74364e+00 831 2014 11 1.70292e+01 2.35273e+00 356 2014 12 1.57983e+01 1.38668e+00 369 2015 1 1.44907e+01 1.14416e+00 270 2015 2 1.39885e+01 1.41757e+00 482 2015 3 1.91581e+01 2.12993e+00 466 2015 4 2.26282e+01 2.06263e+00 299 2015 5 2.62312e+01 2.00172e+00 839 2015 6 2.95356e+01 1.55336e+00 576 2015 7 2.94669e+01 1.51481e+00 575 2015 8 3.00765e+01 1.19824e+00 569 2015 9 2.80697e+01 1.19868e+00 302 2015 10 2.39478e+01 1.49088e+00 567 2015 11 2.17153e+01 3.04670e+00 508 2015 12 1.75441e+01 1.09398e+00 244 2016 1 1.42870e+01 9.75546e-01 194 2016 2 1.52518e+01 1.78120e+00 384 2016 3 1.89028e+01 2.02076e+00 393 2016 4 2.19009e+01 1.59303e+00 589 2016 5 2.53680e+01 1.48719e+00 706 2016 6 2.90415e+01 1.49962e+00 681 2016 7 3.11657e+01 9.82932e-01 687 2016 8 3.01834e+01 1.56370e+00 613 2016 9 2.89833e+01 1.18087e+00 590 2016 10 2.53837e+01 1.54285e+00 745 2016 11 2.05781e+01 2.24813e+00 502 2016 12 1.75402e+01 1.54165e+00 357 2017 1 1.66021e+01 1.98171e+00 331 2017 2 1.83063e+01 1.75267e+00 566 2017 3 1.91404e+01 2.60070e+00 675 2017 4 2.33628e+01 1.52063e+00 669 2017 5 2.44061e+01 2.19002e+00 492 2017 6 2.75965e+01 2.04963e+00 386 2017 7 2.97270e+01 1.48078e+00 521 2017 8 2.97591e+01 1.13579e+00 506 2017 9 2.80062e+01 1.52128e+00 581 2017 10 2.51316e+01 1.86321e+00 628 2017 11 2.02842e+01 1.76995e+00 628 2017 12 1.68977e+01 2.25320e+00 235 2018 1 1.25116e+01 1.34629e+00 177 2018 2 1.89561e+01 3.32171e+00 264 2018 3 1.90428e+01 1.85317e+00 700 2018 4 2.15031e+01 1.32193e+00 688 2018 5 2.57776e+01 1.98598e+00 633 2018 6 2.86601e+01 1.47369e+00 473 2018 7 2.95752e+01 1.31094e+00 586 2018 8 2.92427e+01 1.31012e+00 362 2018 9 2.97631e+01 1.45193e+00 736 2018 10 2.64964e+01 2.57009e+00 699 2018 11 1.95691e+01 3.14513e+00 197 2018 12 1.52958e+01 1.78901e+00 238 2019 1 1.46678e+01 2.17447e+00 437 2019 2 1.64166e+01 2.36382e+00 198 2019 3 1.84595e+01 1.60907e+00 457 2019 4 2.16918e+01 2.02319e+00 510 2019 5 2.75112e+01 2.08789e+00 869 2019 6 2.87759e+01 1.90948e+00 569 2019 7 2.98063e+01 1.26779e+00 479 2019 8 3.00682e+01 9.74868e-01 482 2019 9 2.94366e+01 1.14060e+00 906 2019 10 2.69810e+01 2.08532e+00 531 2019 11 1.91395e+01 2.20680e+00 489 2019 12 1.63546e+01 1.64222e+00 310 2020 1 1.52604e+01 1.58684e+00 452 2020 2 1.60242e+01 1.64033e+00 401 2020 3 2.18310e+01 3.54494e+00 530 2020 4 2.32696e+01 1.15227e+00 407 2020 5 2.46422e+01 1.71702e+00 576 2020 6 2.90038e+01 1.44445e+00 440 2020 7 2.93017e+01 9.16072e-01 426 2020 8 3.07186e+01 7.89385e-01 437 2020 9 2.84876e+01 2.12020e+00 398 2020 10 2.51561e+01 1.27839e+00 549 2020 11 2.12987e+01 1.80509e+00 737 2020 12 1.54720e+01 1.65308e+00 583 2021 1 1.48195e+01 1.75162e+00 372 2021 2 1.51048e+01 2.02072e+00 375 2021 3 1.84788e+01 1.84209e+00 529 2021 4 2.12453e+01 1.59163e+00 647 2021 5 2.51721e+01 1.79603e+00 717 2021 6 2.78530e+01 1.70984e+00 408 2021 7 2.96534e+01 1.20639e+00 446 2021 8 2.95260e+01 1.55706e+00 448 2021 9 2.76583e+01 1.14018e+00 578 2021 10 2.57488e+01 1.65137e+00 441 2021 11 1.87329e+01 1.48851e+00 663 2021 12 1.73885e+01 1.84206e+00 454 2022 1 1.52214e+01 3.11432e+00 624 2022 2 1.61686e+01 2.52950e+00 511 2022 3 1.94012e+01 1.28609e+00 718 2022 4 2.27923e+01 1.52601e+00 424 2022 5 2.60827e+01 1.22191e+00 700 2022 6 2.98851e+01 1.54233e+00 581 2022 7 3.02794e+01 1.25101e+00 468 2022 8 3.03117e+01 1.63457e+00 404 2022 9 2.82571e+01 1.82181e+00 483 2022 10 2.32176e+01 1.82253e+00 708 2022 11 2.07530e+01 2.42033e+00 467 2022 12 1.73309e+01 3.05823e+00 608 2023 1 1.58742e+01 1.46436e+00 665 2023 2 1.80149e+01 2.16225e+00 570 2023 3 2.08524e+01 1.95817e+00 497 2023 4 2.30656e+01 1.00156e+00 467 2023 5 2.52019e+01 1.78186e+00 631 2023 6 2.79858e+01 1.79380e+00 503 2023 7 3.01497e+01 1.28742e+00 551 2023 8 3.10433e+01 1.08719e+00 650 2023 9 2.92338e+01 1.34453e+00 638 2023 10 2.36311e+01 1.49612e+00 756 2023 11 1.94981e+01 1.75768e+00 525 2023 12 1.42979e+01 1.23668e+00 359 2024 1 1.37821e+01 1.25437e+00 360 2024 2 1.54746e+01 1.31173e+00 504 2024 3 1.96288e+01 1.32390e+00 333 2024 4 2.04931e+01 7.31474e-01 32