YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.85950e+01 4.23684e-01 32 2000 3 1.99823e+01 1.48164e+00 164 2000 4 2.17882e+01 8.19976e-01 130 2000 5 2.63004e+01 1.01711e+00 98 2000 6 2.84790e+01 1.35364e+00 147 2000 7 3.05709e+01 6.28159e-01 150 2000 8 2.82889e+01 1.80925e+00 46 2000 9 2.70269e+01 1.72477e+00 147 2000 10 2.29576e+01 1.46808e+00 189 2000 11 2.20740e+01 2.26833e+00 102 2000 12 1.65588e+01 5.05750e-02 16 2001 1 1.36681e+01 7.67073e-02 16 2001 2 1.59192e+01 4.06014e-01 32 2001 3 1.70740e+01 1.80135e+00 78 2001 4 2.19991e+01 2.54857e+00 149 2001 5 2.55063e+01 1.50892e+00 207 2001 6 2.63770e+01 9.83168e-01 32 2001 7 2.91181e+01 1.42473e+00 69 2001 8 2.79175e+01 6.47233e-01 111 2001 9 2.75162e+01 1.73777e+00 139 2001 10 2.23875e+01 1.83853e+00 194 2001 11 1.99713e+01 8.72437e-01 201 2001 12 1.88031e+01 1.49632e+00 128 2002 1 1.60229e+01 6.18620e-01 17 2002 2 1.62269e+01 1.33374e-01 32 2002 3 1.30751e+01 7.94422e-01 36 2002 4 2.28995e+01 2.05682e+00 95 2002 5 2.51490e+01 2.51302e+00 123 2002 6 2.80665e+01 1.12435e+00 127 2002 7 2.99787e+01 1.22780e+00 434 2002 8 2.93246e+01 1.51158e+00 576 2002 9 2.78188e+01 1.48033e+00 417 2002 10 2.61626e+01 2.63001e+00 456 2002 11 1.89185e+01 1.86243e+00 343 2002 12 1.53616e+01 1.34216e+00 202 2003 1 1.23990e+01 9.08203e-01 213 2003 2 1.45804e+01 1.39844e+00 301 2003 3 2.03162e+01 2.14677e+00 349 2003 4 2.10465e+01 2.85001e+00 533 2003 5 2.57103e+01 1.29517e+00 467 2003 6 2.80528e+01 1.20966e+00 434 2003 7 2.86631e+01 1.36187e+00 447 2003 8 2.85236e+01 1.74300e+00 455 2003 9 2.76936e+01 1.55950e+00 564 2003 10 2.30689e+01 1.18864e+00 600 2003 11 2.13170e+01 1.86942e+00 736 2003 12 1.61339e+01 6.79217e-01 57 2004 1 1.50783e+01 1.42247e+00 39 2004 2 1.37337e+01 1.43553e+00 113 2004 3 1.87163e+01 1.71771e+00 593 2004 4 2.06194e+01 2.05183e+00 532 2004 5 2.57056e+01 2.36925e+00 748 2004 6 2.84243e+01 1.69418e+00 395 2004 7 2.96849e+01 1.48746e+00 590 2004 8 2.86896e+01 1.83378e+00 434 2004 9 2.71864e+01 1.86196e+00 641 2004 10 2.48292e+01 1.72505e+00 613 2004 11 2.10307e+01 2.23531e+00 470 2004 12 1.70879e+01 1.29061e+00 175 2005 1 1.45344e+01 1.47131e+00 158 2005 2 1.55922e+01 1.14401e+00 264 2005 3 1.60160e+01 1.89657e+00 330 2005 4 2.07844e+01 1.90724e+00 601 2005 5 2.50705e+01 2.59893e+00 693 2005 6 2.80876e+01 1.86015e+00 641 2005 7 2.90983e+01 1.84713e+00 579 2005 8 2.92903e+01 1.56072e+00 520 2005 9 2.83734e+01 1.20876e+00 782 2005 10 2.47486e+01 2.04453e+00 813 2005 11 1.99261e+01 2.08215e+00 324 2005 12 1.61957e+01 1.81877e+00 120 2006 1 1.56278e+01 1.23748e+00 262 2006 2 1.46418e+01 1.46138e+00 331 2006 3 1.80470e+01 1.67330e+00 567 2006 4 2.28046e+01 2.24994e+00 619 2006 5 2.51574e+01 2.15059e+00 662 2006 6 2.92628e+01 1.62259e+00 717 2006 7 2.99874e+01 1.23989e+00 447 2006 8 3.03182e+01 1.32100e+00 680 2006 9 2.80832e+01 1.65797e+00 667 2006 10 2.43408e+01 2.72671e+00 604 2006 11 1.81589e+01 1.72194e+00 329 2006 12 1.61975e+01 1.49191e+00 180 2007 1 1.48407e+01 1.75253e+00 174 2007 2 1.38007e+01 1.73691e+00 234 2007 3 1.81511e+01 2.23086e+00 519 2007 4 2.12620e+01 1.92642e+00 583 2007 5 2.47336e+01 1.18549e+00 772 2007 6 2.82796e+01 1.74185e+00 556 2007 7 2.92080e+01 1.67239e+00 459 2007 8 3.03139e+01 1.17091e+00 680 2007 9 2.82037e+01 1.56476e+00 666 2007 10 2.49778e+01 2.14759e+00 545 2007 11 1.93609e+01 1.54362e+00 502 2007 12 1.73691e+01 1.80437e+00 182 2008 1 1.48471e+01 9.94954e-01 126 2008 2 1.60134e+01 1.66906e+00 334 2008 3 1.72459e+01 1.60420e+00 492 2008 4 2.15136e+01 2.03020e+00 533 2008 5 2.51435e+01 2.24207e+00 671 2008 6 2.92429e+01 1.66689e+00 632 2008 7 2.93210e+01 1.46680e+00 673 2008 8 2.89487e+01 1.32475e+00 511 2008 9 2.67463e+01 1.76228e+00 654 2008 10 2.33697e+01 2.05971e+00 690 2008 11 1.90746e+01 1.41265e+00 531 2008 12 1.58578e+01 1.31905e+00 153 2009 1 1.55362e+01 1.97409e+00 219 2009 2 1.39409e+01 1.58621e+00 286 2009 3 1.82231e+01 2.68676e+00 483 2009 4 2.13177e+01 2.30973e+00 567 2009 5 2.53072e+01 1.97153e+00 565 2009 6 2.90112e+01 1.90528e+00 774 2009 7 2.89617e+01 1.72333e+00 570 2009 8 2.87987e+01 1.36799e+00 524 2009 9 2.82637e+01 1.26482e+00 467 2009 10 2.46849e+01 3.01265e+00 417 2009 11 1.90747e+01 1.73827e+00 382 2009 12 1.37018e+01 1.68081e+00 142 2010 1 1.40391e+01 1.56027e+00 147 2010 2 1.16895e+01 1.41974e+00 250 2010 3 1.52952e+01 2.27867e+00 472 2010 4 2.15196e+01 1.85519e+00 640 2010 5 2.72690e+01 2.15358e+00 541 2010 6 3.07512e+01 2.06650e+00 764 2010 7 2.98254e+01 1.52927e+00 727 2010 8 2.96690e+01 2.07351e+00 483 2010 9 2.90069e+01 1.52502e+00 828 2010 10 2.35121e+01 1.34922e+00 938 2010 11 1.97824e+01 1.64440e+00 481 2010 12 1.48988e+01 1.92808e+00 237 2011 1 1.21179e+01 1.03685e+00 297 2011 2 1.47872e+01 3.48363e+00 217 2011 3 1.93603e+01 2.72319e+00 680 2011 4 2.30491e+01 1.67273e+00 614 2011 5 2.53801e+01 1.97144e+00 753 2011 6 2.99025e+01 1.14658e+00 727 2011 7 3.00400e+01 1.53708e+00 592 2011 8 3.06804e+01 1.10213e+00 755 2011 9 2.70556e+01 1.37452e+00 667 2011 10 2.30532e+01 1.86127e+00 748 2011 11 1.79365e+01 1.10011e+00 406 2011 12 1.69217e+01 1.56452e+00 42 2012 1 1.52054e+01 1.61490e+00 240 2012 2 1.56908e+01 1.67436e+00 150 2012 3 2.11317e+01 2.58156e+00 484 2012 4 2.29409e+01 1.29307e+00 724 2012 5 2.71441e+01 1.88984e+00 839 2012 6 2.77189e+01 1.02756e+00 632 2012 7 2.92269e+01 1.42892e+00 468 2012 8 2.95104e+01 9.84527e-01 392 2012 9 2.74416e+01 1.69154e+00 675 2012 10 2.40204e+01 1.61815e+00 876 2012 11 1.81612e+01 1.49680e+00 490 2012 12 1.74150e+01 1.55032e+00 331 2013 1 1.55370e+01 1.45999e+00 235 2013 2 1.56764e+01 1.05649e+00 225 2013 3 1.58279e+01 1.78504e+00 508 2013 4 2.06721e+01 1.67668e+00 442 2013 5 2.35837e+01 3.10123e+00 596 2013 6 2.80564e+01 1.28435e+00 487 2013 7 2.89655e+01 1.14416e+00 370 2013 8 2.86251e+01 2.01044e+00 502 2013 9 2.91893e+01 1.69494e+00 749 2013 10 2.44523e+01 2.43160e+00 608 2013 11 2.01436e+01 1.79037e+00 369 2013 12 1.62325e+01 8.55426e-01 101 2014 1 1.22145e+01 6.07020e-01 134 2014 2 1.41937e+01 2.10494e+00 262 2014 3 1.65541e+01 1.70710e+00 287 2014 4 2.01858e+01 2.09805e+00 559 2014 5 2.46140e+01 1.94460e+00 582 2014 6 2.91294e+01 2.12089e+00 617 2014 7 2.87511e+01 1.67471e+00 708 2014 8 2.98859e+01 1.22001e+00 627 2014 9 2.84925e+01 2.02805e+00 453 2014 10 2.45173e+01 1.71132e+00 832 2014 11 1.74581e+01 2.21171e+00 375 2014 12 1.66528e+01 1.23114e+00 138 2015 1 1.51139e+01 1.30550e+00 104 2015 2 1.39371e+01 1.36036e+00 272 2015 3 2.01313e+01 1.95420e+00 266 2015 4 2.25796e+01 1.00585e+00 372 2015 5 2.61054e+01 2.01157e+00 606 2015 6 2.93180e+01 1.72004e+00 626 2015 7 2.96032e+01 1.77478e+00 577 2015 8 2.95836e+01 1.45306e+00 729 2015 9 2.84117e+01 1.72086e+00 563 2015 10 2.35428e+01 1.47328e+00 623 2015 11 2.13907e+01 2.36100e+00 400 2015 12 1.81858e+01 1.30827e+00 197 2016 1 1.45535e+01 7.12822e-01 99 2016 2 1.47280e+01 2.00734e+00 475 2016 3 1.79416e+01 1.70323e+00 384 2016 4 2.18490e+01 1.83347e+00 577 2016 5 2.56282e+01 1.95376e+00 533 2016 6 2.97059e+01 1.13272e+00 647 2016 7 3.06270e+01 1.31250e+00 687 2016 8 3.02956e+01 1.36971e+00 513 2016 9 2.92300e+01 1.23512e+00 671 2016 10 2.55667e+01 1.60023e+00 803 2016 11 2.07712e+01 2.20598e+00 429 2016 12 1.79060e+01 1.30863e+00 187 2017 1 1.68047e+01 1.72308e+00 244 2017 2 1.75939e+01 1.71840e+00 353 2017 3 1.90894e+01 2.52368e+00 579 2017 4 2.28072e+01 1.87374e+00 710 2017 5 2.50457e+01 1.79570e+00 575 2017 6 2.71845e+01 1.83951e+00 270 2017 7 2.98767e+01 1.72936e+00 706 2017 8 2.96007e+01 1.79459e+00 521 2017 9 2.77006e+01 1.93844e+00 564 2017 10 2.45121e+01 2.45961e+00 797 2017 11 1.98148e+01 2.03500e+00 572 2017 12 1.75539e+01 2.07735e+00 116 2018 1 1.46033e+01 7.78898e-01 64 2018 2 2.05042e+01 2.66622e+00 300 2018 3 1.88012e+01 2.13757e+00 505 2018 4 2.08109e+01 1.56056e+00 599 2018 5 2.62025e+01 1.98108e+00 669 2018 6 2.88305e+01 1.53892e+00 507 2018 7 2.98370e+01 1.34038e+00 544 2018 8 2.93254e+01 1.80182e+00 571 2018 9 2.96764e+01 1.35605e+00 577 2018 10 2.63501e+01 2.68499e+00 820 2018 11 2.08163e+01 2.09967e+00 164 2018 12 1.48005e+01 1.36486e+00 145 2019 1 1.50527e+01 1.91246e+00 273 2019 2 1.77877e+01 1.97073e+00 153 2019 3 1.81215e+01 1.49869e+00 431 2019 4 2.13892e+01 1.87365e+00 507 2019 5 2.72638e+01 2.28737e+00 750 2019 6 2.95864e+01 1.53247e+00 491 2019 7 2.98540e+01 1.38505e+00 565 2019 8 3.02236e+01 1.34359e+00 468 2019 9 2.98650e+01 1.26175e+00 896 2019 10 2.74952e+01 2.71086e+00 516 2019 11 1.90586e+01 1.48631e+00 293 2019 12 1.70182e+01 1.21432e+00 239 2020 1 1.59549e+01 1.54149e+00 330 2020 2 1.55178e+01 1.43707e+00 409 2020 3 2.17175e+01 3.55065e+00 469 2020 4 2.30050e+01 1.20351e+00 386 2020 5 2.46394e+01 1.90799e+00 668 2020 6 2.84860e+01 1.34043e+00 528 2020 7 3.00979e+01 1.08663e+00 482 2020 8 3.06984e+01 1.10698e+00 489 2020 9 2.86847e+01 2.57635e+00 469 2020 10 2.43649e+01 1.25966e+00 659 2020 11 2.09377e+01 1.62426e+00 676 2020 12 1.64330e+01 1.20446e+00 166 2021 1 1.50534e+01 1.47209e+00 231 2021 2 1.40059e+01 2.37073e+00 364 2021 3 1.79428e+01 2.11909e+00 453 2021 4 2.06882e+01 1.96388e+00 652 2021 5 2.51815e+01 1.59419e+00 543 2021 6 2.78575e+01 1.69479e+00 394 2021 7 3.01143e+01 1.69123e+00 459 2021 8 3.01158e+01 1.79699e+00 441 2021 9 2.73763e+01 1.94302e+00 546 2021 10 2.48585e+01 1.91043e+00 465 2021 11 1.83173e+01 1.38078e+00 757 2021 12 1.69175e+01 1.55710e+00 342 2022 1 1.41445e+01 2.57085e+00 352 2022 2 1.47191e+01 2.00647e+00 464 2022 3 1.82648e+01 1.44411e+00 712 2022 4 2.21402e+01 1.30170e+00 437 2022 5 2.63722e+01 1.28350e+00 693 2022 6 2.96989e+01 1.77663e+00 630 2022 7 3.00696e+01 1.50311e+00 569 2022 8 3.03171e+01 1.36600e+00 459 2022 9 2.84626e+01 1.91186e+00 723 2022 10 2.30780e+01 1.75528e+00 725 2022 11 2.04521e+01 2.45963e+00 506 2022 12 1.76632e+01 2.43580e+00 477 2023 1 1.57985e+01 1.73170e+00 627 2023 2 1.70504e+01 2.33277e+00 426 2023 3 1.97473e+01 2.32094e+00 369 2023 4 2.17519e+01 1.07532e+00 392 2023 5 2.55089e+01 2.36267e+00 553 2023 6 2.87961e+01 2.26394e+00 522 2023 7 3.06669e+01 1.49818e+00 696 2023 8 3.12865e+01 1.27029e+00 828 2023 9 2.91011e+01 1.12294e+00 604 2023 10 2.36040e+01 2.16474e+00 739 2023 11 1.88914e+01 1.69326e+00 598 2023 12 1.43902e+01 1.32958e+00 326 2024 1 1.27251e+01 1.06419e+00 351 2024 2 1.48422e+01 1.59096e+00 437 2024 3 1.84390e+01 1.11774e+00 398 2024 4 2.14678e+01 8.53211e-01 48