YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.84505e+01 4.06833e-01 28 2000 3 2.01775e+01 1.03327e+00 144 2000 4 2.12282e+01 1.13658e+00 109 2000 5 2.61988e+01 1.24688e+00 117 2000 6 2.81032e+01 1.33249e+00 148 2000 7 3.01303e+01 1.25119e+00 155 2000 8 3.03137e+01 1.04821e+00 48 2000 9 2.70456e+01 1.63174e+00 151 2000 10 2.31839e+01 1.32216e+00 178 2000 11 2.22161e+01 2.03477e+00 84 2000 12 1.67342e+01 5.65517e-01 32 2001 1 1.38975e+01 5.23980e-02 14 2001 2 1.56080e+01 2.33781e-01 20 2001 3 1.72586e+01 1.66814e+00 66 2001 4 2.19753e+01 2.25042e+00 148 2001 5 2.48622e+01 1.47367e+00 159 2001 6 2.65725e+01 7.64010e-01 32 2001 7 2.89794e+01 1.48583e+00 113 2001 8 2.86792e+01 8.62136e-01 112 2001 9 2.77354e+01 1.70631e+00 115 2001 10 2.26059e+01 1.77016e+00 176 2001 11 1.99010e+01 8.68266e-01 172 2001 12 1.89819e+01 1.61625e+00 134 2002 1 1.53637e+01 1.38084e-01 16 2002 2 1.59489e+01 2.29281e-01 32 2002 3 1.66808e+01 3.70686e+00 32 2002 4 2.27366e+01 1.81760e+00 100 2002 5 2.62638e+01 1.98377e+00 114 2002 6 2.79443e+01 9.32883e-01 128 2002 7 3.00483e+01 1.13566e+00 495 2002 8 2.96387e+01 1.13810e+00 529 2002 9 2.77868e+01 1.23042e+00 419 2002 10 2.62907e+01 2.31359e+00 382 2002 11 1.94035e+01 1.99891e+00 294 2002 12 1.54218e+01 1.18177e+00 114 2003 1 1.26698e+01 1.06697e+00 263 2003 2 1.44301e+01 9.75517e-01 230 2003 3 2.01701e+01 1.84787e+00 327 2003 4 2.07915e+01 2.60781e+00 524 2003 5 2.56412e+01 1.35046e+00 430 2003 6 2.80214e+01 1.48214e+00 399 2003 7 2.85133e+01 1.40419e+00 394 2003 8 2.88072e+01 1.74134e+00 442 2003 9 2.76855e+01 1.48374e+00 507 2003 10 2.30991e+01 1.06653e+00 488 2003 11 2.14309e+01 1.68004e+00 616 2003 12 1.55338e+01 9.80074e-01 37 2004 1 1.45357e+01 1.50541e+00 49 2004 2 1.39799e+01 1.48924e+00 62 2004 3 1.84898e+01 1.49421e+00 520 2004 4 2.02819e+01 2.30313e+00 462 2004 5 2.54716e+01 2.57006e+00 753 2004 6 2.84532e+01 1.66495e+00 436 2004 7 2.96349e+01 1.38387e+00 587 2004 8 2.85322e+01 1.64363e+00 410 2004 9 2.74522e+01 1.80391e+00 660 2004 10 2.45469e+01 1.67347e+00 538 2004 11 2.11409e+01 2.18884e+00 406 2004 12 1.69130e+01 1.25369e+00 168 2005 1 1.58184e+01 1.56287e+00 105 2005 2 1.55225e+01 1.20875e+00 210 2005 3 1.63772e+01 1.92493e+00 284 2005 4 2.03660e+01 1.66738e+00 548 2005 5 2.47700e+01 2.58603e+00 683 2005 6 2.81812e+01 1.63391e+00 725 2005 7 2.95858e+01 1.48271e+00 558 2005 8 2.91004e+01 1.67969e+00 525 2005 9 2.83632e+01 1.20040e+00 747 2005 10 2.50284e+01 2.16500e+00 734 2005 11 1.91339e+01 2.07350e+00 306 2005 12 1.62459e+01 1.20881e+00 97 2006 1 1.53350e+01 1.33465e+00 275 2006 2 1.42654e+01 1.25319e+00 225 2006 3 1.77235e+01 1.62775e+00 531 2006 4 2.21957e+01 2.34282e+00 523 2006 5 2.49846e+01 1.99769e+00 593 2006 6 2.87825e+01 1.53823e+00 701 2006 7 2.97759e+01 1.62305e+00 489 2006 8 3.01365e+01 1.37518e+00 673 2006 9 2.79020e+01 1.65608e+00 590 2006 10 2.47800e+01 2.59192e+00 505 2006 11 1.84173e+01 1.59181e+00 361 2006 12 1.60383e+01 1.18722e+00 96 2007 1 1.47842e+01 1.65075e+00 130 2007 2 1.39940e+01 1.32618e+00 156 2007 3 1.78150e+01 2.29740e+00 503 2007 4 2.09008e+01 2.02860e+00 509 2007 5 2.45981e+01 1.35773e+00 663 2007 6 2.79288e+01 1.80783e+00 570 2007 7 2.89393e+01 1.58101e+00 372 2007 8 3.02261e+01 1.48292e+00 717 2007 9 2.81887e+01 1.61376e+00 625 2007 10 2.54223e+01 2.12386e+00 476 2007 11 1.93109e+01 1.34121e+00 394 2007 12 1.84951e+01 1.26541e+00 167 2008 1 1.42578e+01 7.12244e-01 115 2008 2 1.60772e+01 1.74811e+00 224 2008 3 1.74796e+01 1.57057e+00 402 2008 4 2.12232e+01 2.21776e+00 512 2008 5 2.50134e+01 2.43636e+00 631 2008 6 2.88751e+01 1.53156e+00 613 2008 7 2.89675e+01 1.56941e+00 606 2008 8 2.85789e+01 1.36092e+00 416 2008 9 2.71055e+01 1.57395e+00 532 2008 10 2.33902e+01 1.69846e+00 542 2008 11 1.91270e+01 1.32495e+00 406 2008 12 1.63451e+01 1.52679e+00 141 2009 1 1.59423e+01 2.04464e+00 186 2009 2 1.39961e+01 1.31981e+00 303 2009 3 1.77273e+01 2.83703e+00 460 2009 4 2.15168e+01 2.08251e+00 486 2009 5 2.53398e+01 1.87988e+00 550 2009 6 2.88596e+01 1.79768e+00 709 2009 7 2.89293e+01 1.56564e+00 556 2009 8 2.84573e+01 1.43980e+00 443 2009 9 2.81649e+01 1.43833e+00 467 2009 10 2.48676e+01 2.59114e+00 393 2009 11 1.90653e+01 1.74250e+00 282 2009 12 1.47738e+01 2.46877e+00 90 2010 1 1.36525e+01 1.27265e+00 112 2010 2 1.13145e+01 1.08579e+00 188 2010 3 1.50867e+01 2.15013e+00 427 2010 4 2.13546e+01 1.54479e+00 533 2010 5 2.67586e+01 2.12995e+00 563 2010 6 3.07173e+01 1.66777e+00 708 2010 7 2.98235e+01 1.39570e+00 668 2010 8 2.95951e+01 1.72607e+00 448 2010 9 2.88493e+01 1.65184e+00 769 2010 10 2.34909e+01 1.37953e+00 803 2010 11 2.00130e+01 1.50491e+00 443 2010 12 1.50297e+01 1.86511e+00 196 2011 1 1.20477e+01 7.58472e-01 192 2011 2 1.43085e+01 3.51244e+00 153 2011 3 1.91399e+01 2.43072e+00 549 2011 4 2.25836e+01 1.82677e+00 507 2011 5 2.50064e+01 1.94954e+00 687 2011 6 2.97003e+01 1.09692e+00 682 2011 7 2.98180e+01 1.23937e+00 591 2011 8 3.03770e+01 1.16836e+00 754 2011 9 2.68171e+01 1.18875e+00 645 2011 10 2.30518e+01 1.84903e+00 689 2011 11 1.84141e+01 1.12721e+00 411 2011 12 1.62351e+01 9.93693e-01 80 2012 1 1.54794e+01 1.59867e+00 238 2012 2 1.54723e+01 1.13762e+00 97 2012 3 2.10559e+01 2.39943e+00 452 2012 4 2.28411e+01 1.13021e+00 646 2012 5 2.66631e+01 1.99172e+00 794 2012 6 2.75838e+01 1.19102e+00 606 2012 7 2.89157e+01 1.48555e+00 468 2012 8 2.89018e+01 1.45177e+00 390 2012 9 2.72248e+01 1.73936e+00 693 2012 10 2.39411e+01 1.75659e+00 786 2012 11 1.84223e+01 1.48662e+00 399 2012 12 1.73464e+01 1.54858e+00 281 2013 1 1.54613e+01 1.45855e+00 225 2013 2 1.55178e+01 1.17393e+00 201 2013 3 1.58032e+01 1.78122e+00 428 2013 4 2.03687e+01 1.94613e+00 373 2013 5 2.37911e+01 2.50241e+00 531 2013 6 2.78837e+01 1.21975e+00 522 2013 7 2.85970e+01 1.52861e+00 404 2013 8 2.84285e+01 1.62921e+00 537 2013 9 2.89859e+01 1.72718e+00 664 2013 10 2.45468e+01 2.41545e+00 548 2013 11 2.00529e+01 1.77240e+00 266 2013 12 1.69149e+01 1.30351e+00 106 2014 1 1.22514e+01 7.08427e-01 59 2014 2 1.35737e+01 1.76305e+00 185 2014 3 1.66881e+01 1.60478e+00 268 2014 4 2.03973e+01 2.16780e+00 472 2014 5 2.48573e+01 1.76148e+00 550 2014 6 2.89695e+01 2.07890e+00 631 2014 7 2.86287e+01 1.57036e+00 599 2014 8 2.92972e+01 1.26449e+00 665 2014 9 2.85854e+01 1.95734e+00 549 2014 10 2.45240e+01 1.85800e+00 686 2014 11 1.74335e+01 2.17396e+00 298 2014 12 1.65997e+01 1.10035e+00 116 2015 1 1.44369e+01 9.62389e-01 62 2015 2 1.37693e+01 1.01289e+00 232 2015 3 1.94529e+01 2.10844e+00 221 2015 4 2.26767e+01 1.19809e+00 366 2015 5 2.61616e+01 2.15229e+00 691 2015 6 2.93387e+01 1.51978e+00 600 2015 7 2.94818e+01 1.56149e+00 590 2015 8 2.94845e+01 1.21120e+00 638 2015 9 2.83529e+01 1.61468e+00 559 2015 10 2.33585e+01 1.27126e+00 634 2015 11 2.16745e+01 2.52737e+00 401 2015 12 1.81320e+01 1.39593e+00 219 2016 1 1.50746e+01 4.27268e-01 50 2016 2 1.46506e+01 1.80621e+00 357 2016 3 1.83030e+01 1.61325e+00 340 2016 4 2.18385e+01 2.36028e+00 504 2016 5 2.52964e+01 1.81509e+00 512 2016 6 2.93272e+01 1.13325e+00 553 2016 7 3.03633e+01 1.53623e+00 669 2016 8 3.01677e+01 1.26140e+00 500 2016 9 2.91449e+01 1.06272e+00 603 2016 10 2.53702e+01 1.71949e+00 728 2016 11 2.09966e+01 2.23516e+00 340 2016 12 1.80317e+01 1.29129e+00 164 2017 1 1.69219e+01 1.64234e+00 203 2017 2 1.73191e+01 1.85225e+00 313 2017 3 1.88542e+01 2.64028e+00 511 2017 4 2.28636e+01 1.92956e+00 523 2017 5 2.47766e+01 1.86949e+00 529 2017 6 2.77450e+01 1.40872e+00 248 2017 7 2.98602e+01 1.54555e+00 719 2017 8 2.96928e+01 1.54362e+00 473 2017 9 2.74897e+01 1.88581e+00 550 2017 10 2.46812e+01 2.38774e+00 737 2017 11 2.03518e+01 1.61864e+00 416 2017 12 1.73441e+01 1.94508e+00 94 2018 1 1.47941e+01 8.52266e-01 46 2018 2 2.08492e+01 2.87990e+00 283 2018 3 1.86408e+01 2.04649e+00 414 2018 4 2.08978e+01 1.13872e+00 537 2018 5 2.61106e+01 2.09205e+00 741 2018 6 2.89031e+01 1.58694e+00 557 2018 7 2.97550e+01 1.30528e+00 480 2018 8 2.94049e+01 1.33707e+00 605 2018 9 2.94388e+01 1.54695e+00 605 2018 10 2.62081e+01 2.68989e+00 745 2018 11 2.10960e+01 2.12158e+00 162 2018 12 1.51492e+01 1.42916e+00 152 2019 1 1.46814e+01 1.59839e+00 220 2019 2 1.79126e+01 1.67368e+00 122 2019 3 1.77645e+01 1.75240e+00 434 2019 4 2.12005e+01 1.70435e+00 449 2019 5 2.68760e+01 2.34075e+00 726 2019 6 2.91872e+01 1.53054e+00 495 2019 7 2.97771e+01 1.21245e+00 532 2019 8 3.01356e+01 1.27946e+00 496 2019 9 2.97748e+01 1.24111e+00 872 2019 10 2.76274e+01 2.47496e+00 519 2019 11 1.89659e+01 1.53546e+00 257 2019 12 1.77635e+01 9.74138e-01 161 2020 1 1.61283e+01 1.47199e+00 279 2020 2 1.58330e+01 1.50593e+00 403 2020 3 2.13635e+01 3.66680e+00 419 2020 4 2.27664e+01 1.07899e+00 441 2020 5 2.45197e+01 2.10631e+00 628 2020 6 2.84684e+01 1.32627e+00 533 2020 7 2.97085e+01 1.24448e+00 569 2020 8 3.07531e+01 8.26610e-01 496 2020 9 2.83748e+01 2.29831e+00 498 2020 10 2.44640e+01 1.18542e+00 606 2020 11 2.11732e+01 1.65722e+00 656 2020 12 1.63510e+01 1.23081e+00 168 2021 1 1.54215e+01 1.34214e+00 200 2021 2 1.35901e+01 1.68042e+00 286 2021 3 1.81416e+01 2.31762e+00 401 2021 4 2.05788e+01 2.10654e+00 618 2021 5 2.50691e+01 1.59969e+00 602 2021 6 2.78665e+01 1.77359e+00 353 2021 7 3.02964e+01 1.19145e+00 409 2021 8 3.00321e+01 1.59036e+00 403 2021 9 2.74617e+01 1.86138e+00 540 2021 10 2.49279e+01 1.89613e+00 526 2021 11 1.85860e+01 1.17735e+00 677 2021 12 1.72876e+01 1.47565e+00 412 2022 1 1.43365e+01 2.48623e+00 308 2022 2 1.47261e+01 2.01750e+00 441 2022 3 1.82873e+01 1.66209e+00 620 2022 4 2.23531e+01 1.39615e+00 451 2022 5 2.62181e+01 1.20014e+00 650 2022 6 2.98060e+01 1.76865e+00 622 2022 7 3.03005e+01 1.48140e+00 535 2022 8 3.01456e+01 1.26634e+00 472 2022 9 2.83738e+01 1.94410e+00 723 2022 10 2.32765e+01 1.69209e+00 705 2022 11 2.09505e+01 2.19386e+00 474 2022 12 1.76019e+01 2.43901e+00 467 2023 1 1.57156e+01 1.45215e+00 533 2023 2 1.66955e+01 2.03281e+00 325 2023 3 2.00091e+01 2.35027e+00 369 2023 4 2.17959e+01 1.12900e+00 373 2023 5 2.55735e+01 2.27665e+00 547 2023 6 2.83493e+01 2.26923e+00 544 2023 7 3.04981e+01 1.47828e+00 664 2023 8 3.09057e+01 1.23491e+00 905 2023 9 2.90722e+01 1.12364e+00 604 2023 10 2.37345e+01 2.30085e+00 745 2023 11 1.90861e+01 1.34898e+00 538 2023 12 1.45127e+01 1.15894e+00 326 2024 1 1.28504e+01 1.39460e+00 377 2024 2 1.47774e+01 1.53889e+00 391 2024 3 1.83468e+01 1.51278e+00 369 2024 4 2.14243e+01 8.24433e-01 48