YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.96313e+01 8.35615e-01 31 2000 3 2.00833e+01 8.81224e-01 149 2000 4 2.13541e+01 2.11773e+00 160 2000 5 2.56257e+01 1.83680e+00 176 2000 6 2.71560e+01 4.40317e-01 101 2000 7 2.95114e+01 6.94118e-01 150 2000 8 2.94385e+01 3.46993e-01 48 2000 9 2.89041e+01 8.54524e-01 86 2000 10 2.57755e+01 8.63184e-01 256 2000 11 2.52095e+01 4.17279e-01 96 2000 12 2.11813e+01 1.57491e+00 125 2001 1 1.91460e+01 9.30031e-01 128 2001 2 1.79785e+01 1.10240e+00 33 2001 3 1.84333e+01 1.60991e-01 48 2001 4 2.08999e+01 2.00202e+00 195 2001 5 2.46289e+01 1.47920e+00 240 2001 6 2.66049e+01 8.10723e-01 64 2001 7 2.76756e+01 1.78294e+00 97 2001 8 2.80650e+01 7.25884e-01 132 2001 9 2.85509e+01 6.25839e-01 142 2001 10 2.54003e+01 9.46024e-01 190 2001 11 2.35695e+01 4.30823e-01 176 2001 12 2.26734e+01 7.05677e-01 212 2002 1 1.98453e+01 6.88959e-01 108 2002 2 1.95787e+01 1.21741e+00 96 2002 3 1.85235e+01 1.84138e+00 96 2002 4 2.24175e+01 1.69582e+00 110 2002 5 2.58409e+01 1.01138e+00 182 2002 6 2.70442e+01 7.38585e-01 146 2002 7 2.95203e+01 1.44675e+00 550 2002 8 2.92426e+01 6.39595e-01 508 2002 9 2.84644e+01 8.18658e-01 426 2002 10 2.78679e+01 1.09642e+00 442 2002 11 2.34585e+01 2.24307e+00 496 2002 12 2.02854e+01 1.67291e+00 441 2003 1 1.76110e+01 1.43062e+00 582 2003 2 1.69829e+01 8.87609e-01 354 2003 3 1.95903e+01 9.30503e-01 278 2003 4 2.08735e+01 1.46577e+00 519 2003 5 2.55234e+01 1.25901e+00 615 2003 6 2.76511e+01 1.01878e+00 352 2003 7 2.87996e+01 9.76442e-01 502 2003 8 2.86810e+01 9.12093e-01 499 2003 9 2.86664e+01 6.83866e-01 430 2003 10 2.58720e+01 9.37175e-01 634 2003 11 2.48211e+01 9.02606e-01 770 2003 12 2.09641e+01 2.10386e+00 546 2004 1 1.90879e+01 1.70623e+00 387 2004 2 1.76961e+01 1.22792e+00 259 2004 3 1.88337e+01 9.23426e-01 633 2004 4 2.01087e+01 1.02723e+00 430 2004 5 2.45178e+01 2.10454e+00 848 2004 6 2.80535e+01 1.60184e+00 528 2004 7 3.02686e+01 1.05772e+00 598 2004 8 2.91194e+01 1.44812e+00 560 2004 9 2.78712e+01 1.48165e+00 627 2004 10 2.56580e+01 1.50975e+00 688 2004 11 2.40842e+01 1.26850e+00 399 2004 12 2.08714e+01 1.17207e+00 491 2005 1 1.96077e+01 1.46250e+00 463 2005 2 1.90384e+01 9.98976e-01 307 2005 3 1.81314e+01 9.30372e-01 376 2005 4 2.07225e+01 1.36726e+00 616 2005 5 2.40362e+01 2.13345e+00 791 2005 6 2.75780e+01 1.33934e+00 729 2005 7 2.87745e+01 1.39211e+00 648 2005 8 2.96215e+01 1.11533e+00 655 2005 9 2.89147e+01 1.02349e+00 799 2005 10 2.71415e+01 9.86400e-01 907 2005 11 2.32886e+01 1.56334e+00 512 2005 12 2.06947e+01 1.38292e+00 501 2006 1 1.88402e+01 8.99148e-01 446 2006 2 1.80779e+01 1.75463e+00 335 2006 3 1.95796e+01 1.21774e+00 569 2006 4 2.19839e+01 2.28712e+00 651 2006 5 2.47857e+01 1.58851e+00 689 2006 6 2.85499e+01 1.55862e+00 786 2006 7 2.94302e+01 1.24735e+00 532 2006 8 3.01075e+01 9.75687e-01 632 2006 9 2.92757e+01 8.76810e-01 689 2006 10 2.72425e+01 1.16799e+00 643 2006 11 2.30603e+01 1.53138e+00 703 2006 12 2.07708e+01 1.04419e+00 301 2007 1 1.96835e+01 7.58383e-01 238 2007 2 1.81418e+01 1.04895e+00 438 2007 3 1.84544e+01 1.11432e+00 591 2007 4 2.09514e+01 1.53897e+00 477 2007 5 2.39989e+01 1.03407e+00 811 2007 6 2.69964e+01 1.64077e+00 644 2007 7 2.88030e+01 1.36912e+00 441 2007 8 2.99608e+01 8.09940e-01 672 2007 9 2.87223e+01 1.47562e+00 621 2007 10 2.68309e+01 1.10052e+00 648 2007 11 2.38984e+01 1.52300e+00 687 2007 12 2.15946e+01 1.21382e+00 513 2008 1 2.00240e+01 1.04125e+00 354 2008 2 1.94223e+01 7.74662e-01 608 2008 3 1.83006e+01 7.25394e-01 471 2008 4 2.07806e+01 9.90627e-01 533 2008 5 2.44117e+01 1.99666e+00 757 2008 6 2.90742e+01 1.30879e+00 665 2008 7 2.91811e+01 1.10841e+00 499 2008 8 2.82087e+01 1.25230e+00 459 2008 9 2.76431e+01 7.17714e-01 654 2008 10 2.62895e+01 8.99161e-01 684 2008 11 2.37749e+01 1.36672e+00 783 2008 12 2.00770e+01 9.07470e-01 464 2009 1 1.93688e+01 1.34875e+00 538 2009 2 1.81620e+01 1.02717e+00 515 2009 3 1.91733e+01 1.31239e+00 587 2009 4 2.09116e+01 1.59581e+00 655 2009 5 2.51926e+01 1.52952e+00 638 2009 6 2.83928e+01 1.82529e+00 791 2009 7 2.84022e+01 1.37867e+00 622 2009 8 2.89741e+01 1.09389e+00 598 2009 9 2.81272e+01 7.24722e-01 485 2009 10 2.70231e+01 1.32056e+00 477 2009 11 2.31148e+01 1.57052e+00 510 2009 12 1.98989e+01 1.55189e+00 206 2010 1 1.82556e+01 2.08058e+00 386 2010 2 1.53566e+01 7.88813e-01 385 2010 3 1.65979e+01 1.13252e+00 488 2010 4 1.98589e+01 1.68564e+00 517 2010 5 2.56790e+01 2.42653e+00 649 2010 6 3.03236e+01 1.60040e+00 723 2010 7 2.97624e+01 1.21483e+00 669 2010 8 2.97722e+01 1.51073e+00 501 2010 9 2.91131e+01 7.31066e-01 821 2010 10 2.58682e+01 1.17073e+00 1089 2010 11 2.34079e+01 1.30059e+00 639 2010 12 2.04983e+01 2.09941e+00 685 2011 1 1.80374e+01 1.11904e+00 514 2011 2 1.66004e+01 1.30608e+00 262 2011 3 1.93330e+01 1.58344e+00 526 2011 4 2.20064e+01 1.36583e+00 768 2011 5 2.49259e+01 1.37544e+00 896 2011 6 2.96539e+01 1.25451e+00 813 2011 7 3.01531e+01 1.28136e+00 542 2011 8 3.05685e+01 1.38006e+00 892 2011 9 2.82936e+01 5.72917e-01 696 2011 10 2.63280e+01 1.31932e+00 933 2011 11 2.35398e+01 8.24471e-01 484 2011 12 2.11782e+01 5.93365e-01 421 2012 1 1.87636e+01 1.31598e+00 468 2012 2 1.83916e+01 1.25898e+00 145 2012 3 2.05194e+01 1.60169e+00 573 2012 4 2.26131e+01 7.69511e-01 862 2012 5 2.60136e+01 1.89160e+00 802 2012 6 2.71926e+01 7.41940e-01 582 2012 7 2.85167e+01 1.07212e+00 509 2012 8 2.91804e+01 1.02686e+00 374 2012 9 2.75048e+01 1.21532e+00 659 2012 10 2.64593e+01 7.78008e-01 931 2012 11 2.34347e+01 7.76556e-01 644 2012 12 2.17706e+01 1.39760e+00 424 2013 1 1.96326e+01 7.56135e-01 343 2013 2 1.91650e+01 8.51917e-01 349 2013 3 1.84524e+01 1.16862e+00 608 2013 4 2.08006e+01 1.08154e+00 370 2013 5 2.33145e+01 1.46714e+00 673 2013 6 2.75145e+01 1.51716e+00 666 2013 7 2.83973e+01 1.12510e+00 427 2013 8 2.87481e+01 1.24901e+00 493 2013 9 2.92597e+01 1.09034e+00 680 2013 10 2.71817e+01 1.00441e+00 638 2013 11 2.46875e+01 1.54839e+00 374 2013 12 2.16024e+01 1.46353e+00 411 2014 1 1.93132e+01 1.38746e+00 365 2014 2 1.72704e+01 1.17167e+00 317 2014 3 1.76811e+01 7.83386e-01 324 2014 4 1.96122e+01 1.57654e+00 501 2014 5 2.42946e+01 1.66342e+00 643 2014 6 2.80979e+01 1.90766e+00 649 2014 7 2.88303e+01 1.28948e+00 715 2014 8 2.95495e+01 1.35958e+00 632 2014 9 2.93151e+01 1.27125e+00 493 2014 10 2.66740e+01 1.05296e+00 916 2014 11 2.32007e+01 1.55888e+00 589 2014 12 2.13350e+01 9.86534e-01 431 2015 1 1.99825e+01 9.39040e-01 386 2015 2 1.94781e+01 7.89083e-01 512 2015 3 1.98949e+01 1.52137e+00 470 2015 4 2.22818e+01 1.10817e+00 301 2015 5 2.51316e+01 1.83737e+00 704 2015 6 2.85481e+01 1.21272e+00 730 2015 7 2.97798e+01 1.24467e+00 557 2015 8 2.96627e+01 9.72023e-01 765 2015 9 2.89006e+01 1.30158e+00 602 2015 10 2.59666e+01 1.04924e+00 611 2015 11 2.46262e+01 1.27564e+00 530 2015 12 2.27736e+01 1.24185e+00 334 2016 1 2.15270e+01 1.20927e+00 482 2016 2 1.84274e+01 1.12011e+00 554 2016 3 1.91178e+01 1.31520e+00 403 2016 4 2.11272e+01 1.15772e+00 593 2016 5 2.48030e+01 1.44133e+00 572 2016 6 2.92993e+01 1.23472e+00 568 2016 7 3.06043e+01 1.08099e+00 581 2016 8 2.94111e+01 1.19149e+00 523 2016 9 2.95271e+01 7.09631e-01 687 2016 10 2.73143e+01 1.14663e+00 809 2016 11 2.49257e+01 1.11164e+00 675 2016 12 2.20333e+01 1.14225e+00 610 2017 1 2.02993e+01 1.78596e+00 486 2017 2 1.94391e+01 1.21526e+00 497 2017 3 2.04660e+01 1.01512e+00 563 2017 4 2.23820e+01 1.11852e+00 707 2017 5 2.44802e+01 1.32029e+00 618 2017 6 2.77872e+01 1.09162e+00 260 2017 7 2.96952e+01 1.54299e+00 617 2017 8 2.99175e+01 1.50638e+00 497 2017 9 2.81733e+01 1.03807e+00 670 2017 10 2.71504e+01 7.87407e-01 661 2017 11 2.39364e+01 1.15915e+00 734 2017 12 2.22112e+01 9.66166e-01 435 2018 1 1.96932e+01 1.15658e+00 506 2018 2 2.06571e+01 1.35731e+00 434 2018 3 2.08619e+01 1.47545e+00 522 2018 4 2.10186e+01 1.00745e+00 697 2018 5 2.58619e+01 2.41783e+00 785 2018 6 2.88649e+01 1.85929e+00 611 2018 7 2.97234e+01 1.25957e+00 543 2018 8 2.95416e+01 8.55849e-01 607 2018 9 2.94788e+01 9.12578e-01 677 2018 10 2.80350e+01 1.39336e+00 709 2018 11 2.35056e+01 1.96996e+00 329 2018 12 1.97285e+01 1.60821e+00 286 2019 1 1.88509e+01 1.14617e+00 393 2019 2 1.97901e+01 7.94886e-01 233 2019 3 1.98235e+01 8.16536e-01 508 2019 4 2.06828e+01 1.12331e+00 556 2019 5 2.59819e+01 1.93014e+00 840 2019 6 2.94524e+01 1.40603e+00 487 2019 7 2.99131e+01 1.24745e+00 614 2019 8 3.03324e+01 9.31862e-01 327 2019 9 2.96061e+01 1.01529e+00 796 2019 10 2.82302e+01 1.37924e+00 435 2019 11 2.44596e+01 1.07334e+00 503 2019 12 2.18383e+01 1.32249e+00 469 2020 1 2.07292e+01 1.05791e+00 360 2020 2 1.99978e+01 7.14122e-01 421 2020 3 2.18717e+01 2.45877e+00 464 2020 4 2.26148e+01 8.05276e-01 442 2020 5 2.42593e+01 1.23365e+00 720 2020 6 2.72905e+01 1.05633e+00 532 2020 7 2.93495e+01 8.17100e-01 542 2020 8 3.03514e+01 7.57876e-01 456 2020 9 2.86761e+01 1.59617e+00 475 2020 10 2.57719e+01 1.05754e+00 583 2020 11 2.51530e+01 1.13500e+00 667 2020 12 2.17303e+01 1.42150e+00 660 2021 1 1.88895e+01 1.69092e+00 479 2021 2 1.84931e+01 1.19683e+00 352 2021 3 2.00538e+01 9.43762e-01 452 2021 4 2.16018e+01 9.46646e-01 666 2021 5 2.38504e+01 1.01343e+00 540 2021 6 2.70225e+01 1.34757e+00 439 2021 7 2.99068e+01 1.23762e+00 463 2021 8 3.00020e+01 1.34108e+00 455 2021 9 2.83089e+01 9.37732e-01 525 2021 10 2.69348e+01 9.67378e-01 470 2021 11 2.41503e+01 9.72666e-01 752 2021 12 2.12128e+01 5.82177e-01 504 2022 1 1.90491e+01 1.79323e+00 536 2022 2 1.82878e+01 1.48828e+00 652 2022 3 1.94135e+01 8.82857e-01 692 2022 4 2.19019e+01 1.05261e+00 429 2022 5 2.55034e+01 8.05198e-01 692 2022 6 2.92991e+01 1.58630e+00 554 2022 7 3.01371e+01 9.95750e-01 527 2022 8 3.00428e+01 1.12630e+00 406 2022 9 2.97200e+01 7.93093e-01 775 2022 10 2.62664e+01 1.40320e+00 713 2022 11 2.39025e+01 1.02868e+00 513 2022 12 2.24611e+01 1.13279e+00 602 2023 1 2.13137e+01 1.47115e+00 511 2023 2 2.03572e+01 1.08635e+00 424 2023 3 2.11878e+01 1.04765e+00 697 2023 4 2.17271e+01 5.13637e-01 423 2023 5 2.47635e+01 1.86667e+00 712 2023 6 2.76913e+01 1.64991e+00 750 2023 7 3.07711e+01 9.76765e-01 652 2023 8 3.09134e+01 1.06076e+00 867 2023 9 3.06173e+01 7.24350e-01 700 2023 10 2.68082e+01 1.50471e+00 803 2023 11 2.43113e+01 7.98722e-01 457 2023 12 2.18068e+01 1.17905e+00 352 2024 1 1.98395e+01 1.03487e+00 332 2024 2 1.90172e+01 6.15794e-01 433 2024 3 1.96967e+01 1.23964e+00 431 2024 4 2.01303e+01 5.80244e-01 48