YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.66403e+01 1.20506e-02 16 2000 3 1.95628e+01 1.22587e+00 165 2000 4 2.19255e+01 1.21710e+00 120 2000 5 2.57163e+01 2.23950e+00 161 2000 6 2.80652e+01 1.19799e+00 112 2000 7 2.99543e+01 8.48564e-01 112 2000 8 2.93847e+01 4.04022e-01 40 2000 9 2.69960e+01 1.00650e+00 77 2000 10 2.29313e+01 1.68748e+00 209 2000 11 2.14956e+01 2.37305e+00 67 2000 12 1.47976e+01 8.16215e-01 43 2001 1 1.30047e+01 6.00648e-01 32 2001 2 1.63550e+01 1.29219e+00 57 2001 3 1.77814e+01 1.52483e+00 57 2001 4 2.09196e+01 2.00011e+00 135 2001 5 2.43813e+01 1.70196e+00 173 2001 6 2.70390e+01 1.00916e+00 48 2001 7 2.88984e+01 5.56157e-01 32 2001 8 2.83624e+01 8.07930e-01 134 2001 9 2.73728e+01 1.02369e+00 125 2001 10 2.27467e+01 1.14762e+00 167 2001 11 1.96500e+01 8.31734e-01 131 2001 12 2.02130e+01 1.10487e+00 130 2002 1 1.33650e+01 2.08941e-01 16 2002 2 1.50275e+01 7.52800e-01 87 2002 3 1.96784e+01 5.86159e-01 25 2002 4 2.32846e+01 2.40603e+00 118 2002 5 2.65252e+01 1.46541e+00 133 2002 6 2.75269e+01 9.70478e-01 120 2002 7 2.93025e+01 1.15056e+00 384 2002 8 2.89937e+01 1.14670e+00 443 2002 9 2.84107e+01 1.08829e+00 323 2002 10 2.73467e+01 1.85362e+00 535 2002 11 2.05347e+01 2.48328e+00 425 2002 12 1.51633e+01 1.15507e+00 213 2003 1 1.32444e+01 1.12342e+00 259 2003 2 1.44757e+01 1.43715e+00 171 2003 3 1.92901e+01 1.87348e+00 233 2003 4 2.03808e+01 2.16793e+00 471 2003 5 2.57685e+01 1.60254e+00 571 2003 6 2.77025e+01 1.95325e+00 326 2003 7 2.92985e+01 1.43580e+00 387 2003 8 2.85302e+01 1.15794e+00 355 2003 9 2.80219e+01 8.95576e-01 452 2003 10 2.36624e+01 1.16050e+00 492 2003 11 2.17782e+01 1.88940e+00 606 2003 12 1.54839e+01 1.01624e+00 178 2004 1 1.34960e+01 9.71223e-01 244 2004 2 1.32151e+01 1.18880e+00 145 2004 3 1.79158e+01 1.94506e+00 498 2004 4 2.00278e+01 1.52541e+00 455 2004 5 2.49326e+01 1.95829e+00 738 2004 6 2.87462e+01 1.58592e+00 578 2004 7 2.95468e+01 1.50137e+00 482 2004 8 2.95248e+01 1.32246e+00 616 2004 9 2.72323e+01 1.85704e+00 509 2004 10 2.46085e+01 1.59273e+00 544 2004 11 2.20187e+01 2.47916e+00 479 2004 12 1.59714e+01 1.67305e+00 202 2005 1 1.37995e+01 1.63510e+00 166 2005 2 1.45136e+01 1.18123e+00 294 2005 3 1.60654e+01 1.54740e+00 334 2005 4 2.03338e+01 1.55842e+00 500 2005 5 2.45049e+01 2.64627e+00 561 2005 6 2.79665e+01 1.76530e+00 571 2005 7 2.92055e+01 1.59022e+00 586 2005 8 2.92887e+01 1.92218e+00 418 2005 9 2.78932e+01 1.41673e+00 694 2005 10 2.49146e+01 2.55362e+00 642 2005 11 2.02341e+01 1.75417e+00 400 2005 12 1.55181e+01 1.80147e+00 185 2006 1 1.55671e+01 1.18820e+00 339 2006 2 1.46616e+01 1.32915e+00 280 2006 3 1.79006e+01 1.59768e+00 558 2006 4 2.27906e+01 2.08168e+00 620 2006 5 2.50841e+01 1.76668e+00 646 2006 6 2.84745e+01 1.35277e+00 618 2006 7 2.98876e+01 1.52710e+00 534 2006 8 3.01637e+01 1.16687e+00 610 2006 9 2.83520e+01 1.38590e+00 583 2006 10 2.46465e+01 2.24086e+00 485 2006 11 1.81435e+01 2.06352e+00 458 2006 12 1.61117e+01 1.13038e+00 150 2007 1 1.41751e+01 1.02503e+00 91 2007 2 1.34430e+01 1.32592e+00 212 2007 3 1.81203e+01 1.97720e+00 551 2007 4 1.99972e+01 1.77260e+00 483 2007 5 2.38160e+01 9.19536e-01 646 2007 6 2.72417e+01 1.59977e+00 515 2007 7 2.94340e+01 1.37916e+00 393 2007 8 2.96598e+01 1.42070e+00 582 2007 9 2.83527e+01 1.46720e+00 483 2007 10 2.60032e+01 1.28187e+00 331 2007 11 1.94148e+01 1.18096e+00 549 2007 12 1.74569e+01 1.22539e+00 299 2008 1 1.40087e+01 1.55749e+00 209 2008 2 1.57428e+01 1.30505e+00 271 2008 3 1.67212e+01 1.82558e+00 427 2008 4 2.11488e+01 1.29782e+00 458 2008 5 2.49118e+01 1.56547e+00 612 2008 6 2.89221e+01 1.23747e+00 555 2008 7 2.94358e+01 1.30161e+00 485 2008 8 2.81385e+01 1.12597e+00 306 2008 9 2.74730e+01 1.59681e+00 458 2008 10 2.36256e+01 1.86883e+00 519 2008 11 1.79959e+01 1.68122e+00 508 2008 12 1.57176e+01 1.30041e+00 210 2009 1 1.55761e+01 1.81720e+00 355 2009 2 1.41639e+01 9.87099e-01 345 2009 3 1.80190e+01 2.20464e+00 387 2009 4 2.10456e+01 1.67469e+00 457 2009 5 2.53268e+01 1.72702e+00 550 2009 6 2.84172e+01 1.95377e+00 685 2009 7 2.89184e+01 1.61028e+00 563 2009 8 2.91365e+01 1.55333e+00 496 2009 9 2.76896e+01 1.43428e+00 460 2009 10 2.58150e+01 2.45000e+00 518 2009 11 1.97657e+01 1.73666e+00 280 2009 12 1.46018e+01 2.23623e+00 146 2010 1 1.18636e+01 2.13149e+00 216 2010 2 1.20562e+01 1.29310e+00 328 2010 3 1.49902e+01 1.94109e+00 298 2010 4 2.07741e+01 1.96365e+00 462 2010 5 2.61073e+01 2.29408e+00 679 2010 6 2.98660e+01 1.36962e+00 744 2010 7 2.93067e+01 1.71349e+00 609 2010 8 2.92285e+01 1.45094e+00 364 2010 9 2.91593e+01 1.40661e+00 757 2010 10 2.44228e+01 1.33997e+00 698 2010 11 1.98513e+01 1.41497e+00 583 2010 12 1.41153e+01 2.88326e+00 434 2011 1 1.09818e+01 1.01339e+00 317 2011 2 1.49226e+01 2.75033e+00 190 2011 3 1.86432e+01 1.71891e+00 389 2011 4 2.27917e+01 1.46856e+00 663 2011 5 2.51964e+01 1.69306e+00 727 2011 6 2.92433e+01 1.37406e+00 641 2011 7 2.98002e+01 1.08024e+00 388 2011 8 3.02589e+01 1.33312e+00 749 2011 9 2.76027e+01 9.62294e-01 667 2011 10 2.37006e+01 2.01116e+00 629 2011 11 1.89049e+01 8.33316e-01 336 2011 12 1.59047e+01 5.93452e-01 263 2012 1 1.52506e+01 1.18647e+00 364 2012 2 1.56323e+01 9.38044e-01 169 2012 3 2.09676e+01 2.49803e+00 538 2012 4 2.29938e+01 1.00006e+00 779 2012 5 2.63791e+01 1.59278e+00 678 2012 6 2.66470e+01 1.79815e+00 430 2012 7 2.84215e+01 1.42417e+00 504 2012 8 2.88126e+01 1.99754e+00 405 2012 9 2.74572e+01 1.41597e+00 570 2012 10 2.46768e+01 1.88866e+00 679 2012 11 1.84283e+01 1.20202e+00 456 2012 12 1.71475e+01 1.28042e+00 273 2013 1 1.60270e+01 1.29225e+00 169 2013 2 1.62722e+01 8.96707e-01 201 2013 3 1.56253e+01 1.47501e+00 478 2013 4 2.04333e+01 1.94220e+00 427 2013 5 2.40106e+01 2.09642e+00 576 2013 6 2.81109e+01 1.45999e+00 601 2013 7 2.78684e+01 2.13183e+00 251 2013 8 2.95625e+01 1.49448e+00 441 2013 9 2.89969e+01 1.40829e+00 578 2013 10 2.55769e+01 1.67278e+00 607 2013 11 2.01785e+01 2.48169e+00 401 2013 12 1.63740e+01 1.98160e+00 280 2014 1 1.29224e+01 1.06231e+00 204 2014 2 1.37724e+01 1.90243e+00 209 2014 3 1.67101e+01 1.60985e+00 357 2014 4 2.03947e+01 2.13795e+00 476 2014 5 2.43907e+01 2.20012e+00 521 2014 6 2.84383e+01 1.80182e+00 521 2014 7 2.85981e+01 1.30490e+00 638 2014 8 2.99968e+01 1.18036e+00 571 2014 9 2.88791e+01 1.72058e+00 500 2014 10 2.50306e+01 1.77983e+00 871 2014 11 1.80885e+01 2.47119e+00 396 2014 12 1.62759e+01 1.29697e+00 262 2015 1 1.43989e+01 1.22501e+00 245 2015 2 1.36905e+01 8.81428e-01 357 2015 3 1.88595e+01 2.09528e+00 392 2015 4 2.18601e+01 2.07048e+00 318 2015 5 2.60524e+01 2.23655e+00 716 2015 6 2.91534e+01 1.46952e+00 593 2015 7 2.92001e+01 1.67758e+00 493 2015 8 3.00566e+01 1.32441e+00 586 2015 9 2.76553e+01 1.77929e+00 322 2015 10 2.39167e+01 1.28886e+00 621 2015 11 2.19159e+01 2.47567e+00 527 2015 12 1.80193e+01 9.91129e-01 286 2016 1 1.50836e+01 1.25615e+00 289 2016 2 1.48669e+01 1.74205e+00 371 2016 3 1.81925e+01 2.01007e+00 338 2016 4 2.16298e+01 1.48702e+00 516 2016 5 2.49490e+01 1.64316e+00 624 2016 6 2.88086e+01 1.42694e+00 609 2016 7 3.04550e+01 1.43841e+00 695 2016 8 2.96418e+01 1.11407e+00 448 2016 9 2.90162e+01 8.50957e-01 509 2016 10 2.57828e+01 1.74677e+00 682 2016 11 2.07769e+01 2.02084e+00 456 2016 12 1.77464e+01 1.32237e+00 302 2017 1 1.65525e+01 1.59438e+00 276 2017 2 1.74129e+01 1.73981e+00 420 2017 3 1.86678e+01 1.71228e+00 558 2017 4 2.25774e+01 1.29182e+00 544 2017 5 2.50007e+01 1.62243e+00 430 2017 6 2.75376e+01 1.80840e+00 340 2017 7 2.99952e+01 1.52820e+00 497 2017 8 3.00034e+01 1.31348e+00 539 2017 9 2.77672e+01 1.56172e+00 456 2017 10 2.49010e+01 1.82334e+00 621 2017 11 2.01877e+01 1.63474e+00 628 2017 12 1.72381e+01 1.96986e+00 226 2018 1 1.17169e+01 9.64048e-01 221 2018 2 1.89787e+01 2.67838e+00 376 2018 3 1.85130e+01 1.49707e+00 510 2018 4 2.11059e+01 1.15481e+00 581 2018 5 2.53601e+01 2.28425e+00 574 2018 6 2.86171e+01 1.82897e+00 461 2018 7 2.96824e+01 1.24316e+00 455 2018 8 2.89472e+01 1.48060e+00 464 2018 9 2.94813e+01 1.56983e+00 625 2018 10 2.64299e+01 1.91659e+00 726 2018 11 1.96151e+01 1.88745e+00 204 2018 12 1.59352e+01 1.51530e+00 170 2019 1 1.54086e+01 2.07017e+00 454 2019 2 1.71429e+01 1.91343e+00 193 2019 3 1.73977e+01 2.03879e+00 303 2019 4 2.09571e+01 1.73230e+00 446 2019 5 2.65818e+01 2.69200e+00 672 2019 6 2.89053e+01 1.45369e+00 453 2019 7 2.93894e+01 1.49645e+00 419 2019 8 3.01490e+01 1.12486e+00 415 2019 9 2.93613e+01 1.18390e+00 724 2019 10 2.75382e+01 1.92400e+00 537 2019 11 1.93734e+01 2.40975e+00 526 2019 12 1.63647e+01 1.25336e+00 317 2020 1 1.59647e+01 1.38496e+00 418 2020 2 1.62138e+01 1.31234e+00 446 2020 3 2.24987e+01 3.61013e+00 601 2020 4 2.33374e+01 9.93078e-01 411 2020 5 2.43536e+01 1.91150e+00 599 2020 6 2.89886e+01 1.44654e+00 495 2020 7 2.91238e+01 8.97505e-01 421 2020 8 3.04274e+01 9.73537e-01 399 2020 9 2.87612e+01 2.15324e+00 399 2020 10 2.51526e+01 1.39278e+00 615 2020 11 2.17257e+01 1.62640e+00 629 2020 12 1.56633e+01 1.42742e+00 585 2021 1 1.48071e+01 1.37296e+00 313 2021 2 1.55405e+01 2.12804e+00 320 2021 3 1.81113e+01 1.37261e+00 399 2021 4 2.12267e+01 1.50382e+00 580 2021 5 2.47456e+01 1.50038e+00 544 2021 6 2.78163e+01 1.36383e+00 381 2021 7 2.95826e+01 1.31362e+00 386 2021 8 3.00283e+01 1.22364e+00 390 2021 9 2.79847e+01 1.35974e+00 532 2021 10 2.61803e+01 1.42053e+00 432 2021 11 1.94314e+01 1.49517e+00 734 2021 12 1.79556e+01 1.23460e+00 453 2022 1 1.53996e+01 2.51653e+00 564 2022 2 1.54874e+01 3.01710e+00 424 2022 3 1.90548e+01 1.35248e+00 611 2022 4 2.21712e+01 1.35487e+00 267 2022 5 2.60547e+01 1.42609e+00 637 2022 6 2.95488e+01 1.81954e+00 672 2022 7 3.01884e+01 1.35241e+00 537 2022 8 3.02072e+01 1.21105e+00 587 2022 9 2.85552e+01 1.58943e+00 612 2022 10 2.39490e+01 1.75403e+00 753 2022 11 2.10524e+01 2.23632e+00 412 2022 12 1.72406e+01 3.03357e+00 546 2023 1 1.56790e+01 1.24170e+00 625 2023 2 1.77474e+01 2.05652e+00 621 2023 3 2.05556e+01 1.67037e+00 591 2023 4 2.24985e+01 1.08120e+00 398 2023 5 2.48257e+01 1.91595e+00 580 2023 6 2.83982e+01 2.05545e+00 463 2023 7 3.06949e+01 1.03732e+00 670 2023 8 3.09832e+01 1.02358e+00 796 2023 9 2.96998e+01 1.43638e+00 642 2023 10 2.39775e+01 1.94306e+00 688 2023 11 2.01369e+01 1.49287e+00 497 2023 12 1.45470e+01 1.13876e+00 304 2024 1 1.36572e+01 9.77815e-01 394 2024 2 1.52721e+01 1.32486e+00 430 2024 3 1.92379e+01 1.48199e+00 402 2024 4 2.06562e+01 4.02059e-01 48