YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.87484e+01 3.97090e-01 32 2000 3 1.96859e+01 1.49605e+00 140 2000 4 2.20893e+01 1.20290e+00 123 2000 5 2.66033e+01 1.04588e+00 112 2000 6 2.82830e+01 1.21218e+00 81 2000 7 3.04245e+01 7.51444e-01 128 2000 8 2.94064e+01 6.97995e-01 45 2000 9 2.70445e+01 2.02220e+00 137 2000 10 2.26170e+01 1.49151e+00 155 2000 11 2.17456e+01 2.75681e+00 88 2000 12 1.62389e+01 1.84152e-01 32 2001 1 1.33437e+01 4.26286e-02 16 2001 2 1.63456e+01 1.83393e+00 48 2001 3 1.65503e+01 1.22069e+00 64 2001 4 2.19384e+01 2.79830e+00 116 2001 5 2.48712e+01 1.47603e+00 132 2001 6 2.67000e+01 1.83030e-01 16 2001 7 2.91291e+01 2.23727e+00 63 2001 8 2.87145e+01 1.15741e+00 128 2001 9 2.70000e+01 1.90269e+00 140 2001 10 2.20941e+01 1.65220e+00 174 2001 11 1.98552e+01 1.15278e+00 176 2001 12 1.84538e+01 1.87130e+00 128 2002 1 1.62943e+01 6.69113e-01 23 2002 2 1.46455e+01 9.51740e-01 48 2002 3 1.20421e+01 5.91094e-01 14 2002 4 2.25219e+01 2.72617e+00 80 2002 5 2.58343e+01 2.19968e+00 128 2002 6 2.85823e+01 6.93995e-01 114 2002 7 3.00069e+01 1.61275e+00 426 2002 8 2.95638e+01 1.47218e+00 529 2002 9 2.78274e+01 1.72979e+00 418 2002 10 2.61513e+01 2.93801e+00 445 2002 11 1.90807e+01 1.68677e+00 296 2002 12 1.53970e+01 8.12718e-01 152 2003 1 1.24762e+01 1.09045e+00 192 2003 2 1.42473e+01 1.33037e+00 216 2003 3 1.99699e+01 2.21921e+00 319 2003 4 2.11550e+01 2.45332e+00 459 2003 5 2.58275e+01 1.43849e+00 401 2003 6 2.78458e+01 1.31184e+00 400 2003 7 2.81346e+01 1.43403e+00 369 2003 8 2.85805e+01 1.64075e+00 419 2003 9 2.77856e+01 2.00717e+00 441 2003 10 2.30314e+01 1.47882e+00 502 2003 11 2.14003e+01 1.77456e+00 538 2003 12 1.48372e+01 1.40805e-01 20 2004 1 1.50672e+01 1.65367e+00 32 2004 2 1.40379e+01 1.61705e+00 107 2004 3 1.82499e+01 1.80103e+00 441 2004 4 2.05101e+01 2.23761e+00 469 2004 5 2.58806e+01 2.42133e+00 696 2004 6 2.80386e+01 1.64337e+00 384 2004 7 2.96659e+01 1.51578e+00 567 2004 8 2.86638e+01 2.01750e+00 447 2004 9 2.72991e+01 2.04382e+00 556 2004 10 2.47361e+01 1.98936e+00 583 2004 11 2.09633e+01 2.42118e+00 366 2004 12 1.65669e+01 1.11195e+00 117 2005 1 1.56328e+01 1.23207e+00 89 2005 2 1.55376e+01 1.60795e+00 194 2005 3 1.57756e+01 1.76367e+00 300 2005 4 2.04797e+01 1.85077e+00 482 2005 5 2.50691e+01 2.97730e+00 653 2005 6 2.82792e+01 1.88036e+00 597 2005 7 2.95432e+01 1.81695e+00 575 2005 8 2.91167e+01 1.62260e+00 498 2005 9 2.84883e+01 1.48210e+00 687 2005 10 2.48063e+01 1.85925e+00 666 2005 11 2.02200e+01 2.05734e+00 310 2005 12 1.63117e+01 2.39597e+00 84 2006 1 1.52900e+01 1.55430e+00 238 2006 2 1.38610e+01 1.43109e+00 241 2006 3 1.76835e+01 1.70636e+00 507 2006 4 2.33936e+01 2.34965e+00 532 2006 5 2.54482e+01 2.21633e+00 536 2006 6 2.91755e+01 1.65802e+00 605 2006 7 3.02923e+01 1.32874e+00 454 2006 8 3.02879e+01 1.58620e+00 589 2006 9 2.80048e+01 1.81344e+00 589 2006 10 2.46221e+01 2.47553e+00 489 2006 11 1.82863e+01 1.84889e+00 275 2006 12 1.50697e+01 1.27014e+00 98 2007 1 1.36931e+01 9.22048e-01 108 2007 2 1.39124e+01 1.46003e+00 116 2007 3 1.81552e+01 2.65058e+00 501 2007 4 2.10301e+01 2.10408e+00 509 2007 5 2.49144e+01 1.35326e+00 767 2007 6 2.85209e+01 1.81431e+00 491 2007 7 2.88982e+01 1.88280e+00 448 2007 8 3.05854e+01 1.27973e+00 659 2007 9 2.81845e+01 1.57395e+00 579 2007 10 2.51867e+01 2.02676e+00 466 2007 11 1.93026e+01 1.72466e+00 321 2007 12 1.86987e+01 1.75392e+00 184 2008 1 1.44622e+01 8.65325e-01 85 2008 2 1.56204e+01 1.63398e+00 264 2008 3 1.73121e+01 1.87960e+00 393 2008 4 2.13868e+01 2.24385e+00 435 2008 5 2.53016e+01 2.60752e+00 670 2008 6 2.95926e+01 1.44986e+00 565 2008 7 2.94902e+01 1.60588e+00 679 2008 8 2.88357e+01 1.46913e+00 485 2008 9 2.68265e+01 1.91019e+00 622 2008 10 2.30048e+01 1.97198e+00 565 2008 11 1.93049e+01 1.64094e+00 283 2008 12 1.58395e+01 6.94839e-01 76 2009 1 1.53904e+01 1.56108e+00 166 2009 2 1.38951e+01 1.15479e+00 215 2009 3 1.79252e+01 2.96643e+00 462 2009 4 2.10778e+01 2.53877e+00 488 2009 5 2.58582e+01 1.96953e+00 524 2009 6 2.90401e+01 2.17629e+00 745 2009 7 2.91646e+01 1.61945e+00 575 2009 8 2.86643e+01 1.59935e+00 476 2009 9 2.81483e+01 1.59131e+00 508 2009 10 2.51355e+01 2.53843e+00 341 2009 11 1.84292e+01 1.59404e+00 270 2009 12 1.35181e+01 1.30491e+00 100 2010 1 1.37822e+01 1.15500e+00 69 2010 2 1.13587e+01 1.31873e+00 152 2010 3 1.54740e+01 2.18938e+00 429 2010 4 2.16558e+01 1.77917e+00 494 2010 5 2.70945e+01 2.64838e+00 554 2010 6 3.09594e+01 2.13765e+00 730 2010 7 2.99412e+01 1.80866e+00 702 2010 8 3.00228e+01 2.11126e+00 367 2010 9 2.89178e+01 1.79274e+00 734 2010 10 2.31227e+01 1.50884e+00 765 2010 11 1.97560e+01 2.03469e+00 433 2010 12 1.42119e+01 1.94490e+00 146 2011 1 1.15153e+01 7.78901e-01 153 2011 2 1.56175e+01 3.41134e+00 200 2011 3 1.93545e+01 2.96602e+00 572 2011 4 2.27433e+01 1.94970e+00 496 2011 5 2.54564e+01 2.16907e+00 728 2011 6 3.00350e+01 1.32600e+00 699 2011 7 3.01072e+01 1.74202e+00 573 2011 8 3.09213e+01 1.28924e+00 722 2011 9 2.69087e+01 1.30406e+00 615 2011 10 2.25566e+01 1.97812e+00 590 2011 11 1.80740e+01 1.13034e+00 350 2011 12 1.58081e+01 6.33493e-01 32 2012 1 1.55061e+01 2.19362e+00 250 2012 2 1.51971e+01 1.20739e+00 91 2012 3 2.11122e+01 2.90821e+00 480 2012 4 2.27004e+01 1.56494e+00 651 2012 5 2.72773e+01 1.94983e+00 729 2012 6 2.78485e+01 1.36585e+00 543 2012 7 2.90932e+01 1.64588e+00 422 2012 8 2.94047e+01 9.58695e-01 396 2012 9 2.74423e+01 1.89822e+00 630 2012 10 2.36794e+01 1.58140e+00 709 2012 11 1.79353e+01 1.55754e+00 384 2012 12 1.70318e+01 2.11921e+00 176 2013 1 1.55979e+01 1.56418e+00 177 2013 2 1.52174e+01 1.12311e+00 227 2013 3 1.55457e+01 1.95471e+00 432 2013 4 2.04134e+01 1.74829e+00 359 2013 5 2.41286e+01 2.76535e+00 540 2013 6 2.80981e+01 1.55393e+00 521 2013 7 2.87386e+01 1.23546e+00 366 2013 8 2.88164e+01 1.90432e+00 508 2013 9 2.93392e+01 1.47496e+00 639 2013 10 2.45755e+01 2.49364e+00 554 2013 11 1.95301e+01 1.67311e+00 246 2013 12 1.60988e+01 8.31045e-01 106 2014 1 1.23331e+01 6.88864e-01 101 2014 2 1.38039e+01 1.74323e+00 189 2014 3 1.61727e+01 1.73937e+00 203 2014 4 1.98819e+01 2.39150e+00 428 2014 5 2.43473e+01 2.02235e+00 509 2014 6 2.90359e+01 1.92058e+00 621 2014 7 2.86358e+01 1.42220e+00 594 2014 8 3.00147e+01 1.43077e+00 616 2014 9 2.86521e+01 2.33577e+00 503 2014 10 2.44583e+01 1.96602e+00 729 2014 11 1.71261e+01 2.29729e+00 261 2014 12 1.62772e+01 1.40996e+00 196 2015 1 1.50285e+01 2.02473e+00 44 2015 2 1.37827e+01 1.19235e+00 228 2015 3 2.05174e+01 2.24719e+00 247 2015 4 2.22451e+01 1.30075e+00 308 2015 5 2.62382e+01 2.37564e+00 611 2015 6 2.92891e+01 1.99199e+00 529 2015 7 2.96697e+01 1.61868e+00 564 2015 8 2.96389e+01 1.54365e+00 697 2015 9 2.84102e+01 2.05607e+00 454 2015 10 2.34400e+01 1.69369e+00 577 2015 11 2.14840e+01 2.68927e+00 342 2015 12 1.81495e+01 1.43969e+00 175 2016 1 1.47624e+01 1.29617e+00 64 2016 2 1.39084e+01 1.88359e+00 323 2016 3 1.79314e+01 1.61808e+00 300 2016 4 2.16756e+01 2.04692e+00 490 2016 5 2.54597e+01 2.07302e+00 455 2016 6 3.00064e+01 1.16809e+00 645 2016 7 3.06878e+01 1.46328e+00 636 2016 8 3.01702e+01 1.36951e+00 485 2016 9 2.92882e+01 1.25638e+00 601 2016 10 2.53614e+01 1.55235e+00 676 2016 11 2.10079e+01 2.34961e+00 325 2016 12 1.78216e+01 1.35627e+00 126 2017 1 1.72720e+01 1.72727e+00 139 2017 2 1.75321e+01 2.10907e+00 371 2017 3 1.90257e+01 2.94299e+00 537 2017 4 2.28886e+01 2.16274e+00 544 2017 5 2.49992e+01 2.09575e+00 537 2017 6 2.76030e+01 1.64834e+00 240 2017 7 2.96804e+01 1.70207e+00 658 2017 8 2.97700e+01 1.81289e+00 451 2017 9 2.74389e+01 2.10439e+00 513 2017 10 2.45156e+01 2.40601e+00 660 2017 11 2.00220e+01 1.70246e+00 456 2017 12 1.78944e+01 2.18832e+00 81 2018 1 1.42041e+01 6.89741e-01 34 2018 2 2.08465e+01 2.67635e+00 282 2018 3 1.81625e+01 1.60172e+00 395 2018 4 2.09511e+01 1.79091e+00 553 2018 5 2.66108e+01 2.08492e+00 638 2018 6 2.88008e+01 1.79160e+00 452 2018 7 2.98674e+01 1.57457e+00 545 2018 8 2.97446e+01 1.69762e+00 595 2018 9 2.94004e+01 1.53409e+00 579 2018 10 2.64252e+01 2.69205e+00 769 2018 11 2.04678e+01 2.16566e+00 125 2018 12 1.51673e+01 1.52661e+00 117 2019 1 1.54968e+01 1.73734e+00 159 2019 2 1.67031e+01 2.53363e+00 129 2019 3 1.77189e+01 1.93395e+00 370 2019 4 2.11721e+01 2.20657e+00 464 2019 5 2.74929e+01 2.44971e+00 716 2019 6 2.97058e+01 1.56521e+00 480 2019 7 2.98714e+01 1.70771e+00 548 2019 8 2.99940e+01 1.80846e+00 545 2019 9 2.97204e+01 1.46222e+00 864 2019 10 2.77631e+01 2.67712e+00 472 2019 11 1.89717e+01 1.43708e+00 214 2019 12 1.69457e+01 1.11073e+00 151 2020 1 1.56698e+01 1.42030e+00 302 2020 2 1.53790e+01 1.44938e+00 362 2020 3 2.16132e+01 3.74287e+00 424 2020 4 2.29587e+01 1.33917e+00 399 2020 5 2.46541e+01 2.29242e+00 723 2020 6 2.87554e+01 1.62676e+00 476 2020 7 3.01718e+01 1.20630e+00 458 2020 8 3.08181e+01 1.27845e+00 480 2020 9 2.85562e+01 2.72885e+00 472 2020 10 2.44123e+01 1.59935e+00 564 2020 11 2.10544e+01 1.70118e+00 579 2020 12 1.61501e+01 7.73663e-01 146 2021 1 1.51901e+01 1.42462e+00 170 2021 2 1.44299e+01 2.49143e+00 304 2021 3 1.78826e+01 2.38779e+00 316 2021 4 2.07152e+01 2.29461e+00 630 2021 5 2.52099e+01 1.87351e+00 550 2021 6 2.81192e+01 1.59477e+00 439 2021 7 2.98514e+01 1.99169e+00 399 2021 8 3.00323e+01 1.51039e+00 370 2021 9 2.77721e+01 1.86244e+00 508 2021 10 2.44047e+01 2.15246e+00 459 2021 11 1.84890e+01 1.49294e+00 673 2021 12 1.71085e+01 1.64763e+00 328 2022 1 1.39994e+01 2.42454e+00 318 2022 2 1.47776e+01 2.11301e+00 422 2022 3 1.83024e+01 1.78669e+00 642 2022 4 2.16874e+01 1.62383e+00 390 2022 5 2.67344e+01 1.42109e+00 630 2022 6 2.95792e+01 1.76538e+00 676 2022 7 3.01630e+01 1.64544e+00 555 2022 8 3.03608e+01 1.53354e+00 445 2022 9 2.84263e+01 1.88263e+00 677 2022 10 2.28833e+01 1.99045e+00 635 2022 11 2.07427e+01 2.35078e+00 455 2022 12 1.74403e+01 2.62197e+00 477 2023 1 1.58464e+01 2.09607e+00 571 2023 2 1.66908e+01 2.84728e+00 423 2023 3 1.95614e+01 3.14380e+00 349 2023 4 2.19936e+01 1.40248e+00 389 2023 5 2.56499e+01 2.38083e+00 563 2023 6 2.89956e+01 2.29333e+00 489 2023 7 3.06066e+01 1.67101e+00 758 2023 8 3.15215e+01 1.32162e+00 841 2023 9 2.88252e+01 1.43046e+00 679 2023 10 2.39108e+01 2.24449e+00 695 2023 11 1.89310e+01 1.68586e+00 476 2023 12 1.43270e+01 1.62550e+00 309 2024 1 1.26754e+01 1.18310e+00 356 2024 2 1.51442e+01 1.58504e+00 419 2024 3 1.89009e+01 1.72954e+00 337 2024 4 2.16768e+01 1.15215e+00 48