YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 6.22829e+01 2.59421e-01 299 2002 8 5.84318e+01 1.04836e+00 379 2002 9 5.15152e+01 1.21469e+00 288 2002 10 4.42982e+01 2.55732e+00 779 2002 11 3.80113e+01 1.54962e+00 462 2002 12 3.32749e+01 4.75829e-01 203 2003 1 3.54034e+01 1.53419e+00 617 2003 2 4.24201e+01 2.53005e+00 581 2003 3 5.10338e+01 2.20103e+00 465 2003 4 5.78230e+01 1.51799e+00 374 2003 5 6.15402e+01 6.36299e-01 323 2003 6 6.25258e+01 3.57859e-02 192 2003 7 6.20673e+01 4.39055e-01 320 2003 8 5.88740e+01 4.75635e-01 236 2003 9 5.23060e+01 1.26337e+00 266 2003 10 4.45082e+01 1.83911e+00 574 2003 11 3.62725e+01 1.41381e+00 374 2003 12 3.30426e+01 2.87571e-01 399 2004 1 3.60031e+01 1.28396e+00 448 2004 2 4.24761e+01 2.75752e+00 441 2004 3 5.04105e+01 2.44840e+00 394 2004 4 5.72812e+01 1.16534e+00 327 2004 5 6.22236e+01 5.03472e-01 253 2004 6 6.26016e+01 1.00567e-01 551 2004 7 6.22280e+01 6.23793e-01 362 2004 8 5.76803e+01 8.48746e-01 391 2004 9 5.23213e+01 2.13703e+00 334 2004 10 4.34888e+01 1.96555e+00 502 2004 11 3.74790e+01 1.44954e+00 392 2004 12 3.31366e+01 4.90769e-01 396 2005 1 3.60536e+01 1.40214e+00 570 2005 2 4.28367e+01 1.37075e+00 454 2005 3 5.01622e+01 2.05395e+00 465 2005 4 5.70440e+01 1.40173e+00 321 2005 5 6.21021e+01 4.69456e-01 360 2005 6 6.28903e+01 1.31629e-02 62 2005 7 6.23312e+01 5.99154e-01 395 2005 8 5.92165e+01 1.37959e+00 314 2005 9 5.37528e+01 1.48127e+00 632 2005 10 4.56989e+01 1.64134e+00 327 2005 11 3.69810e+01 2.00223e+00 431 2005 12 3.32369e+01 3.95335e-01 707 2006 1 3.49529e+01 1.60494e+00 621 2006 2 4.28129e+01 1.99024e+00 853 2006 3 5.07757e+01 2.61747e+00 683 2006 4 5.73367e+01 1.57490e+00 598 2006 5 6.16155e+01 6.36849e-01 384 2006 6 6.25923e+01 1.58211e-01 175 2006 7 6.17177e+01 5.07530e-01 160 2006 8 5.79759e+01 9.84728e-01 229 2006 9 5.22115e+01 1.90015e+00 389 2006 10 4.48629e+01 1.72123e+00 520 2006 11 3.68476e+01 1.38194e+00 417 2006 12 3.36162e+01 5.01555e-01 175 2007 1 3.63483e+01 1.77110e+00 364 2007 2 4.33446e+01 1.50520e+00 475 2007 3 5.11431e+01 1.58318e+00 299 2007 4 5.73712e+01 1.43103e+00 459 2007 5 6.11537e+01 6.03303e-01 266 2007 6 6.26775e+01 1.43253e-01 506 2007 7 6.20783e+01 4.95057e-01 578 2007 8 5.93364e+01 1.36862e+00 426 2007 9 5.39235e+01 1.27058e+00 320 2007 10 4.53338e+01 2.73119e+00 220 2007 11 3.81164e+01 1.75085e+00 697 2007 12 3.33549e+01 5.42920e-01 610 2008 1 3.59023e+01 1.98794e+00 480 2008 2 4.22460e+01 2.63183e+00 573 2008 3 5.14803e+01 2.26715e+00 242 2008 4 5.80013e+01 1.36862e+00 418 2008 5 6.16677e+01 5.35596e-01 149 2008 6 6.26146e+01 1.03290e-01 265 2008 7 6.15141e+01 4.88626e-01 384 2008 8 5.94974e+01 1.39614e+00 443 2008 9 5.30725e+01 1.80629e+00 298 2008 10 4.57228e+01 2.66544e+00 502 2008 11 3.58354e+01 1.36442e+00 589 2008 12 3.32737e+01 4.44637e-01 561 2009 1 3.61174e+01 1.72242e+00 827 2009 2 4.28352e+01 2.26410e+00 552 2009 3 4.94181e+01 1.55355e+00 377 2009 4 5.75726e+01 9.64823e-01 280 2009 5 6.13870e+01 4.64624e-01 434 2009 6 6.25502e+01 3.89737e-02 178 2009 7 6.22504e+01 2.68130e-01 147 2009 8 5.91970e+01 1.56503e+00 494 2009 9 5.26870e+01 1.46681e+00 391 2009 10 4.52068e+01 2.87614e+00 655 2009 11 3.71729e+01 1.84907e+00 660 2009 12 3.31317e+01 2.08732e-01 333 2010 1 3.57775e+01 1.30153e+00 529 2010 2 4.41172e+01 1.92067e+00 389 2010 3 5.09427e+01 2.21695e+00 591 2010 4 5.74138e+01 1.78565e+00 422 2010 5 6.14805e+01 7.65920e-01 438 2010 6 6.25961e+01 1.18793e-01 443 2010 7 6.17728e+01 6.79971e-01 320 2010 8 5.93978e+01 7.66955e-01 205 2010 9 5.48176e+01 1.50503e+00 134 2010 10 4.62310e+01 2.55509e+00 552 2010 11 3.71380e+01 1.66788e+00 587 2010 12 3.32313e+01 4.37426e-01 774 2011 1 3.51746e+01 1.57758e+00 482 2011 2 4.31441e+01 2.36911e+00 757 2011 3 5.13374e+01 2.20550e+00 804 2011 4 5.74079e+01 1.35721e+00 643 2011 5 6.19456e+01 4.21119e-01 421 2011 6 6.26369e+01 1.20000e-01 399 2011 7 6.20360e+01 5.45523e-01 364 2011 8 5.99617e+01 1.52661e+00 143 2011 9 5.31786e+01 1.72635e+00 319 2011 10 4.50604e+01 2.08886e+00 316 2011 11 3.77834e+01 2.17071e+00 506 2011 12 3.32216e+01 5.02838e-01 719 2012 1 3.48389e+01 1.23078e+00 643 2012 2 4.43496e+01 1.47192e+00 524 2012 3 5.23540e+01 2.49890e+00 307 2012 4 5.71936e+01 1.75297e+00 250 2012 5 6.18254e+01 7.15867e-01 384 2012 6 6.26686e+01 9.05171e-02 128 2012 7 6.17777e+01 5.50709e-01 386 2012 8 5.87061e+01 1.45341e+00 261 2012 9 5.35321e+01 2.47284e+00 509 2012 10 4.47535e+01 2.52727e+00 688 2012 11 3.73290e+01 1.87307e+00 832 2012 12 3.32255e+01 4.61993e-01 331 2013 1 3.54738e+01 1.68341e+00 659 2013 2 4.26523e+01 2.28042e+00 704 2013 3 5.15792e+01 2.23106e+00 596 2013 4 5.87832e+01 1.35453e+00 263 2013 5 6.16896e+01 3.90226e-01 384 2013 6 6.25712e+01 1.13641e-01 201 2013 7 6.18680e+01 7.04177e-01 381 2013 8 5.90359e+01 1.49720e+00 316 2013 9 5.20089e+01 2.65549e+00 256 2013 10 4.47078e+01 1.92652e+00 724 2013 11 3.71484e+01 2.17465e+00 211 2013 12 3.30600e+01 3.77865e-01 337 2014 1 3.64334e+01 1.02542e+00 619 2014 2 4.16731e+01 1.81124e+00 594 2014 3 4.98729e+01 1.88399e+00 596 2014 4 5.81753e+01 1.63063e+00 618 2014 5 6.13248e+01 5.24800e-01 320 2014 6 6.25794e+01 8.54316e-02 512 2014 7 6.18112e+01 4.12453e-01 344 2014 8 5.92527e+01 1.11776e+00 382 2014 9 5.43002e+01 2.73649e+00 215 2014 10 4.40444e+01 2.21517e+00 618 2014 11 3.73337e+01 1.89122e+00 601 2014 12 3.30699e+01 2.62910e-01 359 2015 1 3.60183e+01 1.91061e+00 475 2015 2 4.33650e+01 1.60140e+00 384 2015 3 5.13343e+01 2.29174e+00 938 2015 4 5.71295e+01 1.11275e+00 267 2015 5 6.14501e+01 7.20080e-01 517 2015 6 6.25381e+01 1.51034e-01 239 2015 7 6.21694e+01 3.91622e-01 444 2015 8 5.97231e+01 1.01341e+00 331 2015 9 5.46786e+01 1.69138e+00 276 2015 10 4.43873e+01 2.45913e+00 320 2015 11 3.87905e+01 8.20330e-01 355 2015 12 3.28160e+01 1.75298e-01 214 2016 1 3.66218e+01 9.80540e-01 194 2016 2 4.35397e+01 2.91740e+00 446 2016 3 4.91208e+01 1.63790e+00 192 2016 4 5.73811e+01 1.54869e+00 631 2016 5 6.15777e+01 3.25453e-01 263 2016 6 6.23928e+01 8.82664e-02 212 2016 7 6.22138e+01 5.68807e-01 548 2016 8 5.86716e+01 9.86364e-01 345 2016 9 5.24928e+01 1.67182e+00 423 2016 10 4.63646e+01 1.80048e+00 233 2016 11 3.67939e+01 1.26411e+00 398 2016 12 3.30693e+01 3.69899e-01 488 2017 1 3.65639e+01 1.45864e+00 472 2017 2 4.24175e+01 2.06875e+00 484 2017 3 5.15824e+01 2.26967e+00 479 2017 4 5.84791e+01 1.35813e+00 192 2017 5 6.18854e+01 5.86797e-01 448 2017 6 6.25569e+01 9.02071e-02 257 2017 7 6.22103e+01 4.78532e-01 354 2017 8 5.88901e+01 1.00381e+00 442 2017 9 5.31345e+01 1.56860e+00 472 2017 10 4.41605e+01 1.92165e+00 231 2017 11 3.74000e+01 1.97475e+00 616 2017 12 3.30017e+01 2.69105e-01 779 2018 1 3.55517e+01 1.84612e+00 527 2018 2 4.32151e+01 2.29904e+00 770 2018 3 5.09877e+01 2.41100e+00 914 2018 4 5.77344e+01 1.46555e+00 502 2018 5 6.12239e+01 2.49903e-01 232 2018 6 6.24636e+01 6.27377e-02 247 2018 7 6.22109e+01 3.51818e-01 401 2018 8 5.90680e+01 1.25637e+00 400 2018 9 5.25552e+01 1.48890e+00 328 2018 10 4.45197e+01 2.19897e+00 661 2018 11 3.83285e+01 1.05150e+00 370 2018 12 3.30405e+01 4.01416e-01 572 2019 1 3.49128e+01 1.22441e+00 774 2019 2 4.23759e+01 2.56018e+00 914 2019 3 5.16318e+01 2.81763e+00 310 2019 4 5.84994e+01 9.01015e-01 379 2019 5 6.17706e+01 6.11963e-01 431 2019 6 6.25868e+01 1.32666e-01 394 2019 7 6.16941e+01 3.78396e-01 348 2019 8 5.86887e+01 1.08944e+00 384 2019 9 5.32096e+01 1.59691e+00 470 2019 10 4.47774e+01 2.88900e+00 528 2019 11 3.74571e+01 1.94996e+00 828 2019 12 3.35446e+01 4.98794e-01 466 2020 1 3.55221e+01 1.78691e+00 716 2020 2 4.29181e+01 2.60236e+00 466 2020 3 5.26270e+01 2.08267e+00 543 2020 4 5.75694e+01 1.92741e+00 414 2020 5 6.18785e+01 7.19069e-01 448 2020 6 6.25029e+01 7.17475e-02 256 2020 7 6.21514e+01 4.95281e-01 384 2020 8 5.86101e+01 1.32722e+00 593 2020 9 5.27698e+01 1.83691e+00 390 2020 10 4.51493e+01 1.92870e+00 336 2020 11 3.62300e+01 7.51193e-01 162 2020 12 3.30237e+01 2.88264e-01 497 2021 1 3.56122e+01 1.47510e+00 592 2021 2 4.25093e+01 3.13850e+00 476 2021 3 5.14843e+01 2.89605e+00 709 2021 4 5.82886e+01 9.17573e-01 271 2021 5 6.12703e+01 9.59114e-01 344 2021 6 6.26452e+01 5.87352e-02 192 2021 7 6.19773e+01 4.65538e-01 506 2021 8 5.82513e+01 1.34203e+00 403 2021 9 5.20774e+01 2.06053e+00 596 2021 10 4.58092e+01 2.07939e+00 621 2021 11 3.59227e+01 1.77643e+00 545 2021 12 3.32293e+01 4.52145e-01 880 2022 1 3.52593e+01 1.57476e+00 574 2022 2 4.21277e+01 2.41165e+00 490 2022 3 4.97634e+01 1.93414e+00 214 2022 4 5.95072e+01 2.29745e-02 28 2022 5 6.15748e+01 9.15263e-01 576 2022 6 6.25226e+01 1.31655e-01 464 2022 7 6.22522e+01 3.66895e-01 533 2022 8 5.87500e+01 1.59423e+00 587 2022 9 5.30194e+01 2.14375e+00 438 2022 10 4.41433e+01 2.00578e+00 577 2022 11 3.68410e+01 1.92150e+00 692 2022 12 3.31603e+01 2.88788e-01 437 2023 1 3.49212e+01 1.45208e+00 899 2023 2 4.35708e+01 2.48997e+00 846 2023 3 5.07209e+01 2.53906e+00 836 2023 4 5.73225e+01 1.72235e+00 291 2023 5 6.12015e+01 6.29985e-01 447 2023 6 6.25678e+01 7.33381e-02 388 2023 7 6.23992e+01 3.29250e-01 301 2023 8 5.87902e+01 1.38673e+00 421 2023 9 5.42405e+01 1.07483e+00 329 2023 10 4.56048e+01 2.69835e+00 446 2023 11 3.57035e+01 1.31278e+00 451 2023 12 3.29693e+01 3.82454e-01 331 2024 1 3.67137e+01 1.97434e+00 155 2024 2 4.31099e+01 2.50775e+00 419 2024 3 5.22545e+01 2.26598e+00 543 2024 4 5.54839e+01 4.43241e-02 57