YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.70989e+01 3.78830e-01 32 2000 3 1.97272e+01 1.39185e+00 168 2000 4 2.17535e+01 1.17706e+00 144 2000 5 2.46386e+01 1.52297e+00 220 2000 6 2.68898e+01 7.28366e-01 91 2000 7 2.93164e+01 1.60762e+00 128 2000 8 2.96859e+01 5.86080e-01 95 2000 9 2.65594e+01 5.86022e-01 89 2000 10 2.33003e+01 8.98695e-01 185 2000 11 2.21414e+01 1.83999e+00 131 2000 12 1.58827e+01 1.56725e+00 60 2001 1 1.32144e+01 9.98260e-02 48 2001 2 1.66323e+01 8.66781e-01 64 2001 3 1.73354e+01 1.66267e+00 96 2001 4 2.03201e+01 1.68638e+00 176 2001 5 2.40081e+01 1.42070e+00 228 2001 6 2.55390e+01 1.13519e+00 43 2001 7 2.82094e+01 1.65280e+00 32 2001 8 2.85289e+01 1.56833e+00 125 2001 9 2.68965e+01 1.04263e+00 96 2001 10 2.30413e+01 1.63157e+00 134 2001 11 1.98187e+01 1.03196e+00 185 2001 12 1.99404e+01 1.53720e+00 152 2002 1 1.47173e+01 6.37049e-01 22 2002 2 1.54001e+01 1.08679e+00 108 2002 3 1.52090e+01 9.91021e-01 43 2002 4 2.23510e+01 2.42555e+00 166 2002 5 2.65571e+01 1.16673e+00 128 2002 6 2.75701e+01 7.77671e-01 108 2002 7 2.88997e+01 1.63629e+00 444 2002 8 2.92275e+01 8.14918e-01 575 2002 9 2.85952e+01 8.54975e-01 431 2002 10 2.69898e+01 1.69951e+00 509 2002 11 2.16449e+01 2.37543e+00 454 2002 12 1.62393e+01 8.87623e-01 335 2003 1 1.38158e+01 1.36883e+00 587 2003 2 1.46568e+01 1.12592e+00 266 2003 3 1.87569e+01 1.91156e+00 294 2003 4 2.11416e+01 1.62633e+00 652 2003 5 2.54905e+01 1.35428e+00 668 2003 6 2.74929e+01 1.72185e+00 425 2003 7 2.89861e+01 1.37071e+00 443 2003 8 2.82133e+01 1.39656e+00 483 2003 9 2.81450e+01 8.34409e-01 601 2003 10 2.40109e+01 8.53728e-01 608 2003 11 2.20823e+01 1.39695e+00 724 2003 12 1.63636e+01 1.69243e+00 419 2004 1 1.42143e+01 1.08654e+00 429 2004 2 1.38988e+01 9.92654e-01 209 2004 3 1.76331e+01 1.76163e+00 656 2004 4 2.04353e+01 1.47526e+00 742 2004 5 2.52823e+01 1.58223e+00 911 2004 6 2.83777e+01 1.09562e+00 672 2004 7 2.89549e+01 1.64122e+00 540 2004 8 2.93560e+01 1.38575e+00 536 2004 9 2.75596e+01 1.90366e+00 518 2004 10 2.51663e+01 1.50206e+00 756 2004 11 2.25695e+01 2.21186e+00 544 2004 12 1.67366e+01 2.08855e+00 394 2005 1 1.49321e+01 1.06261e+00 301 2005 2 1.47939e+01 9.02269e-01 313 2005 3 1.66073e+01 1.45256e+00 569 2005 4 2.01476e+01 1.31681e+00 552 2005 5 2.40060e+01 2.30009e+00 746 2005 6 2.76121e+01 1.17190e+00 614 2005 7 2.93290e+01 1.50350e+00 646 2005 8 2.96624e+01 1.21997e+00 573 2005 9 2.81235e+01 1.59777e+00 750 2005 10 2.52520e+01 1.83538e+00 780 2005 11 2.05874e+01 1.50153e+00 512 2005 12 1.59202e+01 1.91262e+00 438 2006 1 1.57712e+01 1.16241e+00 457 2006 2 1.54764e+01 1.10240e+00 474 2006 3 1.82825e+01 1.02444e+00 686 2006 4 2.19014e+01 1.62899e+00 669 2006 5 2.41730e+01 1.31136e+00 798 2006 6 2.76176e+01 1.68335e+00 772 2006 7 2.98143e+01 1.30694e+00 676 2006 8 3.03883e+01 9.22519e-01 749 2006 9 2.90549e+01 1.21930e+00 599 2006 10 2.55021e+01 1.76921e+00 752 2006 11 1.92513e+01 1.95274e+00 668 2006 12 1.64068e+01 1.36518e+00 255 2007 1 1.53308e+01 1.07791e+00 179 2007 2 1.44632e+01 8.21926e-01 355 2007 3 1.81927e+01 1.27325e+00 686 2007 4 2.05757e+01 1.28647e+00 520 2007 5 2.38418e+01 9.05976e-01 896 2007 6 2.71228e+01 1.47331e+00 538 2007 7 2.92237e+01 1.24186e+00 547 2007 8 3.02724e+01 9.15803e-01 602 2007 9 2.85769e+01 1.47807e+00 517 2007 10 2.64223e+01 8.34096e-01 441 2007 11 2.10169e+01 1.20944e+00 718 2007 12 1.85611e+01 9.00849e-01 320 2008 1 1.54356e+01 1.23945e+00 279 2008 2 1.59379e+01 1.14480e+00 408 2008 3 1.80852e+01 1.40977e+00 635 2008 4 2.12564e+01 1.27157e+00 674 2008 5 2.43006e+01 1.74849e+00 682 2008 6 2.80460e+01 1.23524e+00 678 2008 7 2.85379e+01 1.20838e+00 589 2008 8 2.82715e+01 1.00665e+00 465 2008 9 2.76467e+01 1.55912e+00 562 2008 10 2.44853e+01 1.56323e+00 756 2008 11 1.88776e+01 1.64538e+00 549 2008 12 1.64744e+01 9.40240e-01 407 2009 1 1.55284e+01 1.49207e+00 516 2009 2 1.47937e+01 1.42132e+00 563 2009 3 1.78978e+01 1.93585e+00 592 2009 4 2.10829e+01 1.71361e+00 608 2009 5 2.45832e+01 1.13698e+00 638 2009 6 2.69691e+01 1.29161e+00 703 2009 7 2.77946e+01 1.12219e+00 631 2009 8 2.91594e+01 1.16805e+00 528 2009 9 2.81949e+01 9.20978e-01 512 2009 10 2.61221e+01 2.29696e+00 627 2009 11 2.03610e+01 1.52933e+00 390 2009 12 1.54876e+01 1.93138e+00 139 2010 1 1.30931e+01 1.78168e+00 395 2010 2 1.35105e+01 8.54970e-01 398 2010 3 1.53315e+01 1.40210e+00 504 2010 4 2.08413e+01 1.38312e+00 639 2010 5 2.63489e+01 2.18549e+00 760 2010 6 2.95881e+01 1.13904e+00 777 2010 7 2.89337e+01 1.62642e+00 633 2010 8 2.93617e+01 1.30565e+00 343 2010 9 2.93626e+01 1.11085e+00 735 2010 10 2.52211e+01 1.10133e+00 944 2010 11 2.09753e+01 1.41813e+00 700 2010 12 1.56415e+01 2.63752e+00 580 2011 1 1.23262e+01 8.44525e-01 432 2011 2 1.42202e+01 1.50738e+00 193 2011 3 1.84790e+01 1.57823e+00 559 2011 4 2.25845e+01 1.61393e+00 833 2011 5 2.50267e+01 1.46420e+00 990 2011 6 2.86544e+01 1.02518e+00 706 2011 7 2.95649e+01 9.94801e-01 402 2011 8 2.95884e+01 9.68796e-01 774 2011 9 2.80007e+01 6.96569e-01 682 2011 10 2.46153e+01 1.93367e+00 805 2011 11 1.97579e+01 8.37763e-01 562 2011 12 1.72397e+01 7.66273e-01 383 2012 1 1.62641e+01 1.26589e+00 525 2012 2 1.60006e+01 1.54381e+00 127 2012 3 2.04699e+01 1.86014e+00 575 2012 4 2.27559e+01 8.46977e-01 810 2012 5 2.58885e+01 1.36921e+00 861 2012 6 2.68572e+01 9.70464e-01 539 2012 7 2.86129e+01 1.48129e+00 551 2012 8 2.84953e+01 1.28641e+00 440 2012 9 2.79666e+01 1.19023e+00 543 2012 10 2.54917e+01 1.36538e+00 773 2012 11 2.00340e+01 1.38676e+00 604 2012 12 1.72355e+01 1.06586e+00 329 2013 1 1.59946e+01 8.64269e-01 316 2013 2 1.63802e+01 1.24793e+00 341 2013 3 1.68890e+01 1.10125e+00 678 2013 4 2.04497e+01 1.53719e+00 455 2013 5 2.40746e+01 1.91142e+00 606 2013 6 2.75336e+01 1.22729e+00 529 2013 7 2.77348e+01 1.90356e+00 331 2013 8 2.92920e+01 1.60364e+00 445 2013 9 2.92845e+01 1.22273e+00 721 2013 10 2.56987e+01 1.39349e+00 603 2013 11 2.01735e+01 2.24853e+00 424 2013 12 1.70740e+01 1.26704e+00 318 2014 1 1.40782e+01 1.00950e+00 294 2014 2 1.50668e+01 1.43692e+00 292 2014 3 1.67959e+01 1.39421e+00 518 2014 4 2.00677e+01 1.69710e+00 540 2014 5 2.47152e+01 1.52232e+00 707 2014 6 2.77806e+01 1.34331e+00 663 2014 7 2.81352e+01 1.29448e+00 668 2014 8 2.92024e+01 1.05339e+00 685 2014 9 2.91839e+01 1.13403e+00 451 2014 10 2.54109e+01 1.39901e+00 891 2014 11 1.95773e+01 2.10910e+00 461 2014 12 1.64559e+01 7.99524e-01 455 2015 1 1.45008e+01 1.44416e+00 308 2015 2 1.46277e+01 1.04629e+00 482 2015 3 1.83951e+01 1.45469e+00 387 2015 4 2.14585e+01 2.17303e+00 295 2015 5 2.57035e+01 1.70220e+00 825 2015 6 2.92944e+01 1.25002e+00 626 2015 7 2.88868e+01 1.52247e+00 575 2015 8 3.02912e+01 9.56285e-01 578 2015 9 2.81122e+01 1.31403e+00 375 2015 10 2.44246e+01 1.36217e+00 616 2015 11 2.21220e+01 2.32197e+00 558 2015 12 1.84513e+01 5.62575e-01 273 2016 1 1.58487e+01 1.75227e+00 398 2016 2 1.58072e+01 1.09257e+00 538 2016 3 1.84215e+01 1.57451e+00 351 2016 4 2.15569e+01 1.50915e+00 585 2016 5 2.44676e+01 1.30583e+00 711 2016 6 2.80427e+01 1.32407e+00 753 2016 7 3.03880e+01 1.23582e+00 782 2016 8 3.00830e+01 1.46128e+00 598 2016 9 2.92327e+01 1.07111e+00 592 2016 10 2.57554e+01 1.86392e+00 888 2016 11 2.14790e+01 1.70883e+00 649 2016 12 1.80020e+01 1.20287e+00 348 2017 1 1.72651e+01 1.28397e+00 356 2017 2 1.81070e+01 1.41139e+00 583 2017 3 1.86525e+01 1.66202e+00 667 2017 4 2.27345e+01 1.45702e+00 671 2017 5 2.47446e+01 1.28038e+00 612 2017 6 2.77064e+01 1.70178e+00 393 2017 7 2.98153e+01 1.35274e+00 587 2017 8 2.96174e+01 1.23874e+00 505 2017 9 2.78238e+01 1.48595e+00 648 2017 10 2.53869e+01 1.49215e+00 828 2017 11 2.08632e+01 1.30643e+00 696 2017 12 1.74062e+01 1.79890e+00 322 2018 1 1.31056e+01 9.43676e-01 326 2018 2 1.76979e+01 2.28507e+00 201 2018 3 1.87452e+01 1.29577e+00 735 2018 4 2.10307e+01 1.18448e+00 696 2018 5 2.48485e+01 1.92970e+00 589 2018 6 2.80142e+01 1.27032e+00 571 2018 7 2.94003e+01 1.17631e+00 558 2018 8 2.92504e+01 1.18037e+00 528 2018 9 2.99219e+01 1.17438e+00 628 2018 10 2.71873e+01 2.02707e+00 773 2018 11 2.09055e+01 2.06747e+00 296 2018 12 1.67114e+01 1.47917e+00 277 2019 1 1.59895e+01 1.54535e+00 476 2019 2 1.67868e+01 2.05529e+00 187 2019 3 1.81616e+01 1.67538e+00 544 2019 4 2.14272e+01 1.96668e+00 611 2019 5 2.64690e+01 2.25959e+00 970 2019 6 2.81717e+01 1.71323e+00 505 2019 7 2.97862e+01 1.36868e+00 502 2019 8 2.99088e+01 1.24896e+00 513 2019 9 2.92902e+01 1.07119e+00 977 2019 10 2.71378e+01 1.68743e+00 665 2019 11 2.01204e+01 2.11934e+00 658 2019 12 1.71531e+01 9.86859e-01 422 2020 1 1.63102e+01 1.10672e+00 495 2020 2 1.62171e+01 9.83241e-01 460 2020 3 2.06758e+01 3.17847e+00 642 2020 4 2.23835e+01 1.05371e+00 477 2020 5 2.42277e+01 1.34612e+00 699 2020 6 2.87844e+01 9.35371e-01 395 2020 7 2.85113e+01 1.26392e+00 414 2020 8 3.06365e+01 7.76611e-01 452 2020 9 2.82993e+01 2.01549e+00 416 2020 10 2.52269e+01 8.46599e-01 592 2020 11 2.22576e+01 1.51230e+00 800 2020 12 1.68579e+01 1.69694e+00 804 2021 1 1.53506e+01 1.46909e+00 393 2021 2 1.57660e+01 1.25514e+00 403 2021 3 1.82890e+01 1.37818e+00 550 2021 4 2.09207e+01 1.34848e+00 674 2021 5 2.47419e+01 1.42763e+00 820 2021 6 2.75801e+01 1.31298e+00 350 2021 7 2.93595e+01 9.80301e-01 417 2021 8 2.98019e+01 1.01088e+00 510 2021 9 2.79172e+01 9.35436e-01 617 2021 10 2.59610e+01 1.35804e+00 631 2021 11 2.06568e+01 1.24869e+00 694 2021 12 1.81117e+01 7.37599e-01 393 2022 1 1.66848e+01 2.08859e+00 570 2022 2 1.59748e+01 1.68463e+00 541 2022 3 1.91054e+01 7.92623e-01 688 2022 4 2.22457e+01 1.14073e+00 488 2022 5 2.55538e+01 1.35681e+00 630 2022 6 2.90650e+01 1.44819e+00 607 2022 7 3.02517e+01 1.16677e+00 494 2022 8 3.04198e+01 1.37593e+00 353 2022 9 2.85054e+01 1.40010e+00 526 2022 10 2.44346e+01 1.35532e+00 756 2022 11 2.17045e+01 1.69148e+00 442 2022 12 1.76331e+01 2.05319e+00 710 2023 1 1.61814e+01 1.17393e+00 734 2023 2 1.75047e+01 1.44206e+00 522 2023 3 2.02908e+01 1.30638e+00 598 2023 4 2.23980e+01 9.02444e-01 437 2023 5 2.49852e+01 1.56685e+00 709 2023 6 2.70197e+01 1.52166e+00 597 2023 7 2.90685e+01 1.39156e+00 614 2023 8 3.05963e+01 9.05121e-01 663 2023 9 2.95797e+01 1.15289e+00 624 2023 10 2.44316e+01 1.12085e+00 770 2023 11 2.11655e+01 1.51228e+00 534 2023 12 1.54737e+01 1.37038e+00 351 2024 1 1.43336e+01 7.00636e-01 352 2024 2 1.54944e+01 1.02663e+00 490 2024 3 1.88468e+01 1.20539e+00 383 2024 4 2.08491e+01 3.12576e-01 32