YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.86375e+01 9.85837e-02 16 2000 3 1.97458e+01 9.88647e-01 138 2000 4 2.20565e+01 1.48717e+00 125 2000 5 2.69810e+01 1.71082e+00 117 2000 6 2.88594e+01 1.33757e+00 93 2000 7 3.03431e+01 1.22125e+00 112 2000 8 2.78123e+01 1.40203e+00 48 2000 9 2.53131e+01 1.11580e+00 63 2000 10 2.30856e+01 1.92921e+00 150 2000 11 2.29261e+01 1.91674e+00 55 2000 12 1.48450e+01 1.27474e-02 12 2001 1 1.18244e+01 9.81055e-02 18 2001 2 1.69136e+01 1.40120e+00 52 2001 3 1.72410e+01 1.84068e+00 58 2001 4 2.17820e+01 2.17616e+00 107 2001 5 2.51914e+01 1.71364e+00 206 2001 6 2.91703e+01 5.42304e-01 19 2001 7 2.87091e+01 1.34463e+00 73 2001 8 2.89206e+01 1.53485e+00 131 2001 9 2.64110e+01 1.93877e+00 134 2001 10 2.26027e+01 1.24370e+00 167 2001 11 1.98224e+01 1.19077e+00 171 2001 12 1.91508e+01 1.83326e+00 142 2002 1 1.61802e+01 7.48601e-01 30 2002 2 1.45226e+01 2.70292e-01 33 2002 3 1.88701e+01 3.49911e+00 37 2002 4 2.37642e+01 2.57320e+00 139 2002 5 2.49246e+01 1.65895e+00 123 2002 6 2.85371e+01 1.29202e+00 138 2002 7 3.01415e+01 1.29889e+00 476 2002 8 2.95348e+01 1.05163e+00 404 2002 9 2.84616e+01 1.60353e+00 350 2002 10 2.66778e+01 2.10907e+00 403 2002 11 1.92553e+01 2.18543e+00 258 2002 12 1.50962e+01 1.01766e+00 109 2003 1 1.31318e+01 8.87347e-01 138 2003 2 1.48317e+01 1.45301e+00 230 2003 3 2.02113e+01 2.02160e+00 223 2003 4 2.11035e+01 2.63481e+00 413 2003 5 2.63469e+01 1.28032e+00 481 2003 6 2.83397e+01 1.86378e+00 418 2003 7 2.98213e+01 1.49827e+00 375 2003 8 2.88691e+01 1.59797e+00 362 2003 9 2.75475e+01 1.33699e+00 514 2003 10 2.30689e+01 1.18950e+00 502 2003 11 2.08427e+01 2.12167e+00 528 2003 12 1.64892e+01 6.24936e-01 6 2004 1 1.35417e+01 6.37014e-01 88 2004 2 1.26929e+01 1.04642e+00 116 2004 3 1.88311e+01 1.78624e+00 478 2004 4 2.02631e+01 2.20973e+00 501 2004 5 2.68000e+01 2.15061e+00 700 2004 6 2.90777e+01 1.32499e+00 419 2004 7 2.98623e+01 1.49881e+00 523 2004 8 2.91241e+01 1.85598e+00 535 2004 9 2.66224e+01 1.80939e+00 479 2004 10 2.44077e+01 1.72036e+00 555 2004 11 2.06113e+01 2.68964e+00 367 2004 12 1.72024e+01 7.97869e-01 125 2005 1 1.43732e+01 1.45702e+00 142 2005 2 1.45868e+01 1.85448e+00 244 2005 3 1.67836e+01 2.41397e+00 371 2005 4 2.03092e+01 1.59975e+00 516 2005 5 2.49826e+01 2.70418e+00 667 2005 6 2.87653e+01 1.51762e+00 500 2005 7 2.93989e+01 1.84104e+00 600 2005 8 2.87475e+01 1.60214e+00 411 2005 9 2.81944e+01 1.37516e+00 639 2005 10 2.48297e+01 1.87051e+00 505 2005 11 2.01166e+01 1.70189e+00 351 2005 12 1.51971e+01 1.03443e+00 140 2006 1 1.54124e+01 1.43325e+00 304 2006 2 1.38917e+01 1.24867e+00 280 2006 3 1.81045e+01 1.74663e+00 488 2006 4 2.33730e+01 2.07116e+00 570 2006 5 2.56492e+01 2.29743e+00 611 2006 6 2.89317e+01 1.79325e+00 579 2006 7 3.03683e+01 1.73784e+00 483 2006 8 3.03359e+01 1.31594e+00 455 2006 9 2.77918e+01 1.94018e+00 514 2006 10 2.46553e+01 2.32358e+00 443 2006 11 1.82595e+01 1.97170e+00 245 2006 12 1.68037e+01 1.89743e+00 159 2007 1 1.35043e+01 1.02666e+00 114 2007 2 1.32526e+01 2.18811e+00 207 2007 3 1.89209e+01 2.70549e+00 597 2007 4 2.07752e+01 2.17821e+00 423 2007 5 2.47587e+01 1.21541e+00 648 2007 6 2.81450e+01 1.66641e+00 416 2007 7 2.93102e+01 1.77731e+00 416 2007 8 3.00730e+01 1.44356e+00 556 2007 9 2.82579e+01 1.26382e+00 513 2007 10 2.48648e+01 2.30012e+00 474 2007 11 1.88971e+01 1.26748e+00 433 2007 12 1.76785e+01 1.81251e+00 268 2008 1 1.56661e+01 1.21290e+00 122 2008 2 1.60408e+01 1.12587e+00 297 2008 3 1.73200e+01 2.04019e+00 438 2008 4 2.19321e+01 2.15994e+00 415 2008 5 2.53085e+01 1.88819e+00 576 2008 6 2.94679e+01 1.64058e+00 490 2008 7 2.92796e+01 1.28203e+00 508 2008 8 2.79662e+01 1.50279e+00 353 2008 9 2.67773e+01 2.12463e+00 420 2008 10 2.32128e+01 1.99836e+00 567 2008 11 1.86828e+01 1.53018e+00 277 2008 12 1.65744e+01 1.57134e+00 127 2009 1 1.53257e+01 1.41848e+00 217 2009 2 1.47196e+01 1.51214e+00 226 2009 3 1.84667e+01 2.64147e+00 428 2009 4 2.17791e+01 2.53513e+00 481 2009 5 2.60584e+01 2.33684e+00 431 2009 6 2.89496e+01 1.88712e+00 735 2009 7 2.89740e+01 1.56426e+00 512 2009 8 2.93791e+01 1.64850e+00 506 2009 9 2.84902e+01 1.13834e+00 432 2009 10 2.47567e+01 3.04415e+00 437 2009 11 1.87280e+01 1.63297e+00 238 2009 12 1.32900e+01 1.67803e+00 73 2010 1 1.29334e+01 2.39231e+00 188 2010 2 1.15468e+01 1.28768e+00 258 2010 3 1.52801e+01 2.06262e+00 332 2010 4 2.14114e+01 1.82252e+00 496 2010 5 2.68206e+01 2.48726e+00 555 2010 6 3.08320e+01 1.37569e+00 695 2010 7 3.00003e+01 1.68430e+00 658 2010 8 2.95415e+01 1.92288e+00 292 2010 9 2.92365e+01 1.73072e+00 632 2010 10 2.33852e+01 1.33192e+00 626 2010 11 1.89139e+01 1.54447e+00 485 2010 12 1.49650e+01 2.06829e+00 212 2011 1 1.10929e+01 1.03772e+00 213 2011 2 1.63116e+01 3.83326e+00 246 2011 3 2.01860e+01 2.37993e+00 446 2011 4 2.35606e+01 2.11009e+00 655 2011 5 2.56598e+01 2.03716e+00 735 2011 6 3.00431e+01 1.36143e+00 650 2011 7 3.00933e+01 1.69253e+00 578 2011 8 3.03926e+01 1.49343e+00 657 2011 9 2.71942e+01 1.17561e+00 614 2011 10 2.29245e+01 1.97047e+00 567 2011 11 1.79683e+01 1.09544e+00 342 2011 12 1.56162e+01 9.03708e-01 185 2012 1 1.48859e+01 1.62193e+00 305 2012 2 1.60184e+01 1.60303e+00 166 2012 3 2.11687e+01 2.90442e+00 475 2012 4 2.31360e+01 1.52761e+00 624 2012 5 2.73078e+01 1.57218e+00 685 2012 6 2.74802e+01 1.42816e+00 479 2012 7 2.88909e+01 1.60648e+00 387 2012 8 2.84855e+01 1.93597e+00 402 2012 9 2.73474e+01 1.76124e+00 580 2012 10 2.40246e+01 1.89143e+00 653 2012 11 1.80844e+01 1.51753e+00 356 2012 12 1.69913e+01 1.03821e+00 233 2013 1 1.64256e+01 2.18903e+00 239 2013 2 1.56574e+01 1.42795e+00 223 2013 3 1.61665e+01 1.78661e+00 484 2013 4 2.15903e+01 1.94654e+00 394 2013 5 2.45104e+01 2.73549e+00 590 2013 6 2.88080e+01 1.04961e+00 472 2013 7 2.85980e+01 1.17277e+00 208 2013 8 2.88337e+01 2.14549e+00 421 2013 9 2.91172e+01 2.28258e+00 504 2013 10 2.34646e+01 2.00296e+00 360 2013 11 1.96074e+01 1.95431e+00 309 2013 12 1.65408e+01 2.14653e+00 178 2014 1 1.21159e+01 8.06427e-01 129 2014 2 1.35783e+01 2.11023e+00 244 2014 3 1.72548e+01 1.80777e+00 367 2014 4 1.98524e+01 2.43972e+00 355 2014 5 2.58470e+01 2.25748e+00 524 2014 6 2.90437e+01 1.72248e+00 565 2014 7 2.88227e+01 1.67523e+00 579 2014 8 2.96267e+01 1.29827e+00 549 2014 9 2.91257e+01 2.12703e+00 424 2014 10 2.43869e+01 1.92895e+00 746 2014 11 1.70351e+01 2.18206e+00 228 2014 12 1.63608e+01 1.31675e+00 191 2015 1 1.38737e+01 1.06161e+00 202 2015 2 1.31595e+01 1.25028e+00 283 2015 3 2.02400e+01 2.24474e+00 307 2015 4 2.27529e+01 1.83836e+00 263 2015 5 2.67944e+01 2.32350e+00 554 2015 6 2.99264e+01 1.44823e+00 584 2015 7 2.97325e+01 1.59072e+00 512 2015 8 2.97223e+01 1.39289e+00 566 2015 9 2.75865e+01 1.37061e+00 355 2015 10 2.38308e+01 1.41042e+00 578 2015 11 2.13688e+01 2.93377e+00 324 2015 12 1.81135e+01 2.31391e+00 239 2016 1 1.33554e+01 1.12123e+00 181 2016 2 1.45244e+01 1.40007e+00 341 2016 3 1.83143e+01 1.90159e+00 413 2016 4 2.18773e+01 1.73890e+00 413 2016 5 2.51588e+01 2.07442e+00 503 2016 6 2.92983e+01 1.61187e+00 702 2016 7 3.10285e+01 1.30069e+00 621 2016 8 2.99736e+01 1.37898e+00 434 2016 9 2.92001e+01 1.18158e+00 601 2016 10 2.51904e+01 1.34516e+00 637 2016 11 2.00978e+01 1.96936e+00 438 2016 12 1.79833e+01 1.51754e+00 271 2017 1 1.68530e+01 2.27287e+00 220 2017 2 1.79078e+01 1.56224e+00 392 2017 3 1.87201e+01 2.49921e+00 473 2017 4 2.31793e+01 2.00677e+00 544 2017 5 2.51224e+01 2.18087e+00 458 2017 6 2.80561e+01 1.90273e+00 306 2017 7 3.04128e+01 1.95881e+00 507 2017 8 2.99323e+01 1.98007e+00 458 2017 9 2.73630e+01 1.97541e+00 406 2017 10 2.46175e+01 2.21535e+00 598 2017 11 1.98965e+01 2.11113e+00 529 2017 12 1.64179e+01 2.31929e+00 155 2018 1 1.29758e+01 8.28759e-01 63 2018 2 2.00561e+01 3.64477e+00 396 2018 3 1.83705e+01 2.23430e+00 501 2018 4 2.14084e+01 9.61985e-01 472 2018 5 2.62491e+01 1.81993e+00 437 2018 6 2.97700e+01 2.07622e+00 516 2018 7 3.00315e+01 1.24156e+00 594 2018 8 2.90784e+01 2.12684e+00 507 2018 9 2.97917e+01 1.64829e+00 538 2018 10 2.61471e+01 2.67640e+00 679 2018 11 2.08836e+01 1.57942e+00 131 2018 12 1.57434e+01 1.44681e+00 134 2019 1 1.45889e+01 2.17524e+00 317 2019 2 1.72365e+01 2.35803e+00 262 2019 3 1.78522e+01 2.00072e+00 340 2019 4 2.18898e+01 2.08113e+00 425 2019 5 2.81551e+01 2.32615e+00 740 2019 6 3.00830e+01 1.33330e+00 391 2019 7 3.01591e+01 1.58023e+00 495 2019 8 3.02681e+01 1.44743e+00 398 2019 9 2.97855e+01 1.59751e+00 744 2019 10 2.70501e+01 2.87952e+00 484 2019 11 1.90796e+01 1.99394e+00 375 2019 12 1.62531e+01 1.61720e+00 215 2020 1 1.59012e+01 1.89245e+00 430 2020 2 1.56127e+01 1.59200e+00 381 2020 3 2.18538e+01 4.01493e+00 466 2020 4 2.30556e+01 1.13345e+00 353 2020 5 2.48626e+01 1.74051e+00 551 2020 6 2.90668e+01 1.36473e+00 402 2020 7 2.95842e+01 8.53076e-01 485 2020 8 3.10882e+01 1.59380e+00 441 2020 9 2.89502e+01 2.95802e+00 452 2020 10 2.46847e+01 1.48187e+00 516 2020 11 2.09218e+01 1.84048e+00 612 2020 12 1.56118e+01 1.66366e+00 269 2021 1 1.52729e+01 1.42529e+00 237 2021 2 1.55639e+01 2.29012e+00 265 2021 3 1.92683e+01 2.11609e+00 411 2021 4 2.12319e+01 2.01291e+00 524 2021 5 2.49243e+01 2.08274e+00 481 2021 6 2.82815e+01 1.14116e+00 310 2021 7 3.07418e+01 1.62465e+00 408 2021 8 3.03687e+01 1.81332e+00 435 2021 9 2.79604e+01 2.25389e+00 519 2021 10 2.52065e+01 1.88943e+00 443 2021 11 1.85929e+01 1.56201e+00 528 2021 12 1.75001e+01 1.54550e+00 392 2022 1 1.44198e+01 2.68931e+00 357 2022 2 1.62318e+01 3.05083e+00 451 2022 3 1.89244e+01 1.48657e+00 640 2022 4 2.25098e+01 1.89232e+00 395 2022 5 2.68440e+01 1.50311e+00 578 2022 6 3.01103e+01 1.69789e+00 676 2022 7 3.01500e+01 1.41694e+00 498 2022 8 3.05429e+01 1.42132e+00 529 2022 9 2.80143e+01 1.84629e+00 573 2022 10 2.31925e+01 1.99006e+00 714 2022 11 2.06345e+01 2.83181e+00 401 2022 12 1.82037e+01 2.23149e+00 429 2023 1 1.57754e+01 1.41633e+00 475 2023 2 1.76825e+01 2.60020e+00 503 2023 3 1.99414e+01 2.39632e+00 439 2023 4 2.31871e+01 1.41589e+00 548 2023 5 2.51890e+01 2.40994e+00 444 2023 6 2.85318e+01 2.30649e+00 510 2023 7 3.10387e+01 1.60107e+00 620 2023 8 3.12661e+01 1.21684e+00 776 2023 9 2.91880e+01 1.61982e+00 699 2023 10 2.37077e+01 2.28121e+00 678 2023 11 1.91675e+01 1.89027e+00 423 2023 12 1.41531e+01 1.58839e+00 372 2024 1 1.29618e+01 1.61882e+00 321 2024 2 1.51102e+01 1.67566e+00 462 2024 3 1.96766e+01 1.33525e+00 326 2024 4 2.20329e+01 1.00156e+00 48