YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.86736e+01 4.17708e-01 32 2000 3 1.95797e+01 1.76074e+00 94 2000 4 2.19549e+01 1.39841e+00 90 2000 5 2.57117e+01 1.28435e+00 121 2000 6 2.76317e+01 1.51766e+00 83 2000 7 2.99320e+01 1.54270e+00 147 2000 8 2.95941e+01 1.20318e+00 43 2000 9 2.64744e+01 2.14745e+00 122 2000 10 2.28310e+01 1.18772e+00 68 2000 11 2.30094e+01 1.20448e+00 52 2000 12 1.58786e+01 3.18253e-01 32 2001 1 nan nan 0 2001 2 1.51210e+01 1.15534e+00 31 2001 3 1.61196e+01 9.55527e-01 50 2001 4 2.22541e+01 3.02376e+00 98 2001 5 2.46407e+01 1.78431e+00 127 2001 6 nan nan 0 2001 7 2.73072e+01 2.19433e+00 48 2001 8 2.82879e+01 1.47696e+00 99 2001 9 2.76090e+01 1.68260e+00 83 2001 10 2.19976e+01 1.76232e+00 160 2001 11 2.00130e+01 1.35295e+00 125 2001 12 1.84898e+01 1.54557e+00 106 2002 1 1.70571e+01 7.91904e-01 24 2002 2 1.54620e+01 2.66252e-01 35 2002 3 1.29550e+01 1.12097e+00 29 2002 4 2.22040e+01 2.63283e+00 77 2002 5 2.52323e+01 2.40459e+00 104 2002 6 2.79502e+01 1.54690e+00 118 2002 7 2.98698e+01 2.01548e+00 342 2002 8 2.91332e+01 1.68354e+00 458 2002 9 2.75963e+01 1.71567e+00 336 2002 10 2.58577e+01 2.64944e+00 342 2002 11 1.89715e+01 1.91511e+00 170 2002 12 1.50407e+01 1.37019e+00 107 2003 1 1.25378e+01 1.25604e+00 80 2003 2 1.43377e+01 1.72114e+00 204 2003 3 2.01577e+01 2.17374e+00 266 2003 4 2.06237e+01 2.65603e+00 403 2003 5 2.52891e+01 1.90236e+00 372 2003 6 2.69953e+01 1.41017e+00 354 2003 7 2.73614e+01 1.22403e+00 277 2003 8 2.82090e+01 1.67510e+00 373 2003 9 2.71994e+01 1.79689e+00 353 2003 10 2.32499e+01 1.46321e+00 300 2003 11 2.16699e+01 1.85893e+00 439 2003 12 nan nan 0 2004 1 1.54650e+01 5.10910e-01 21 2004 2 1.37042e+01 1.13867e+00 89 2004 3 1.82672e+01 1.96764e+00 320 2004 4 2.05625e+01 2.85962e+00 404 2004 5 2.55262e+01 2.53136e+00 607 2004 6 2.74197e+01 1.65542e+00 397 2004 7 2.92836e+01 1.79792e+00 508 2004 8 2.82399e+01 2.00813e+00 367 2004 9 2.67486e+01 2.08742e+00 494 2004 10 2.46178e+01 2.11900e+00 455 2004 11 2.08822e+01 2.37187e+00 278 2004 12 1.66319e+01 1.12604e+00 107 2005 1 1.54393e+01 2.51169e+00 44 2005 2 1.57149e+01 1.67279e+00 147 2005 3 1.62241e+01 2.41894e+00 229 2005 4 2.02342e+01 1.84632e+00 440 2005 5 2.43482e+01 2.93522e+00 524 2005 6 2.76200e+01 1.83628e+00 516 2005 7 2.92646e+01 1.83922e+00 503 2005 8 2.85094e+01 1.65007e+00 435 2005 9 2.81400e+01 1.79547e+00 602 2005 10 2.48646e+01 1.67917e+00 447 2005 11 2.04502e+01 2.15637e+00 180 2005 12 1.53142e+01 1.29468e+00 83 2006 1 1.51836e+01 1.52939e+00 151 2006 2 1.43075e+01 1.51308e+00 169 2006 3 1.76406e+01 1.80699e+00 403 2006 4 2.29722e+01 2.51900e+00 386 2006 5 2.52599e+01 2.69608e+00 564 2006 6 2.88244e+01 1.84597e+00 515 2006 7 3.00737e+01 1.64212e+00 368 2006 8 2.98820e+01 1.74932e+00 478 2006 9 2.81978e+01 2.23571e+00 488 2006 10 2.51501e+01 2.07108e+00 403 2006 11 1.84890e+01 1.82667e+00 192 2006 12 1.58245e+01 1.92137e+00 94 2007 1 1.43169e+01 1.09852e+00 49 2007 2 1.41722e+01 1.85605e+00 136 2007 3 1.85832e+01 2.70534e+00 369 2007 4 2.12202e+01 2.57272e+00 413 2007 5 2.45808e+01 1.82067e+00 611 2007 6 2.81612e+01 2.29013e+00 503 2007 7 2.89952e+01 1.77732e+00 347 2007 8 3.02964e+01 1.59648e+00 626 2007 9 2.81524e+01 1.78864e+00 531 2007 10 2.51836e+01 2.01564e+00 351 2007 11 1.98482e+01 1.82014e+00 270 2007 12 1.94459e+01 1.97002e+00 141 2008 1 1.43034e+01 9.70350e-01 49 2008 2 1.63159e+01 1.77947e+00 199 2008 3 1.69367e+01 1.73560e+00 261 2008 4 2.14967e+01 2.46905e+00 359 2008 5 2.52188e+01 2.64618e+00 552 2008 6 2.92762e+01 1.74592e+00 600 2008 7 2.91088e+01 1.75663e+00 597 2008 8 2.90294e+01 1.49139e+00 414 2008 9 2.68382e+01 1.91959e+00 507 2008 10 2.30283e+01 2.28421e+00 362 2008 11 1.92988e+01 1.92648e+00 230 2008 12 1.65838e+01 1.59346e+00 60 2009 1 1.67072e+01 2.21069e+00 136 2009 2 1.36042e+01 1.28422e+00 165 2009 3 1.83738e+01 2.47329e+00 300 2009 4 2.07408e+01 2.47266e+00 470 2009 5 2.48273e+01 1.69993e+00 443 2009 6 2.87405e+01 2.55593e+00 648 2009 7 2.87129e+01 1.65284e+00 562 2009 8 2.82947e+01 1.70775e+00 415 2009 9 2.76676e+01 1.55996e+00 454 2009 10 2.51202e+01 2.69145e+00 215 2009 11 1.88958e+01 1.82293e+00 147 2009 12 1.42702e+01 1.18704e+00 46 2010 1 1.39195e+01 1.83566e+00 102 2010 2 1.20592e+01 1.74522e+00 46 2010 3 1.50558e+01 2.29970e+00 214 2010 4 2.12123e+01 1.87523e+00 399 2010 5 2.66829e+01 2.59973e+00 539 2010 6 3.06519e+01 2.21206e+00 681 2010 7 3.01735e+01 1.72246e+00 659 2010 8 2.97743e+01 1.93332e+00 370 2010 9 2.92202e+01 1.84477e+00 686 2010 10 2.32947e+01 1.66098e+00 555 2010 11 1.97320e+01 2.30673e+00 255 2010 12 1.42984e+01 1.43700e+00 113 2011 1 1.20636e+01 1.07715e+00 148 2011 2 1.78795e+01 1.92593e+00 125 2011 3 1.87196e+01 2.78302e+00 488 2011 4 2.25665e+01 1.99659e+00 458 2011 5 2.53628e+01 2.45074e+00 622 2011 6 2.97991e+01 1.39438e+00 597 2011 7 2.98072e+01 1.70975e+00 542 2011 8 3.07326e+01 1.65103e+00 673 2011 9 2.70669e+01 1.56491e+00 597 2011 10 2.28599e+01 2.00151e+00 389 2011 11 1.81989e+01 1.31779e+00 197 2011 12 1.49898e+01 1.04523e+00 41 2012 1 1.55994e+01 2.16121e+00 207 2012 2 1.54057e+01 1.50120e+00 99 2012 3 2.08472e+01 2.93022e+00 335 2012 4 2.30308e+01 1.89018e+00 572 2012 5 2.68509e+01 2.17969e+00 654 2012 6 2.75015e+01 1.73993e+00 580 2012 7 2.87757e+01 1.42919e+00 426 2012 8 2.85689e+01 1.33918e+00 337 2012 9 2.71221e+01 2.10988e+00 601 2012 10 2.42526e+01 1.95868e+00 539 2012 11 1.84072e+01 1.82033e+00 299 2012 12 1.73958e+01 2.22583e+00 161 2013 1 1.63953e+01 1.51797e+00 120 2013 2 1.53514e+01 1.44368e+00 119 2013 3 1.54085e+01 1.80186e+00 369 2013 4 2.02702e+01 2.07662e+00 399 2013 5 2.36185e+01 3.01065e+00 462 2013 6 2.80828e+01 1.61234e+00 486 2013 7 2.82739e+01 1.54255e+00 300 2013 8 2.79569e+01 1.63114e+00 490 2013 9 2.87289e+01 1.73621e+00 531 2013 10 2.48678e+01 2.36319e+00 458 2013 11 1.96642e+01 2.00938e+00 233 2013 12 1.67436e+01 1.92202e+00 94 2014 1 1.27325e+01 7.71136e-01 50 2014 2 1.34811e+01 2.53796e+00 109 2014 3 1.62395e+01 1.31612e+00 236 2014 4 1.89353e+01 2.38332e+00 342 2014 5 2.32532e+01 2.01555e+00 422 2014 6 2.79672e+01 1.79188e+00 512 2014 7 2.85124e+01 1.34183e+00 563 2014 8 2.97212e+01 1.87831e+00 584 2014 9 2.88187e+01 1.66634e+00 363 2014 10 2.47922e+01 2.14121e+00 606 2014 11 1.66048e+01 2.46663e+00 89 2014 12 1.66537e+01 1.41452e+00 100 2015 1 1.43022e+01 9.62884e-01 51 2015 2 1.44485e+01 1.19461e+00 103 2015 3 2.01543e+01 1.98864e+00 196 2015 4 2.15573e+01 1.59581e+00 268 2015 5 2.59442e+01 2.60181e+00 591 2015 6 2.89389e+01 2.38946e+00 542 2015 7 2.89848e+01 1.71301e+00 512 2015 8 2.96675e+01 1.53373e+00 599 2015 9 2.85176e+01 2.42524e+00 397 2015 10 2.35055e+01 1.81859e+00 440 2015 11 2.25922e+01 2.19799e+00 234 2015 12 1.81483e+01 1.36016e+00 93 2016 1 1.48526e+01 4.08042e-01 39 2016 2 1.42089e+01 2.26259e+00 269 2016 3 1.73218e+01 1.82853e+00 220 2016 4 2.09413e+01 2.13017e+00 433 2016 5 2.51654e+01 2.29583e+00 400 2016 6 2.96499e+01 1.59955e+00 551 2016 7 3.04133e+01 1.46913e+00 559 2016 8 2.95411e+01 1.91887e+00 419 2016 9 2.91328e+01 1.65572e+00 555 2016 10 2.51907e+01 1.80555e+00 657 2016 11 2.16628e+01 2.69799e+00 283 2016 12 1.75226e+01 1.33401e+00 114 2017 1 1.80771e+01 9.97411e-01 95 2017 2 1.81692e+01 2.02226e+00 206 2017 3 1.89956e+01 3.05773e+00 326 2017 4 2.23516e+01 2.42695e+00 471 2017 5 2.46597e+01 2.41830e+00 394 2017 6 2.67596e+01 2.00848e+00 213 2017 7 2.87011e+01 1.92482e+00 658 2017 8 2.84490e+01 1.08484e+00 375 2017 9 2.73737e+01 1.95629e+00 504 2017 10 2.47769e+01 2.21714e+00 496 2017 11 2.03167e+01 1.90493e+00 338 2017 12 1.85070e+01 1.37042e+00 74 2018 1 1.40214e+01 6.98320e-02 7 2018 2 2.06858e+01 2.38499e+00 238 2018 3 1.73898e+01 1.57651e+00 300 2018 4 2.04209e+01 1.98363e+00 502 2018 5 2.58487e+01 2.22924e+00 542 2018 6 2.79316e+01 1.90977e+00 450 2018 7 2.92904e+01 1.52872e+00 438 2018 8 2.91216e+01 1.89327e+00 554 2018 9 2.89014e+01 1.67346e+00 529 2018 10 2.60959e+01 2.61122e+00 635 2018 11 2.10353e+01 8.57581e-01 111 2018 12 1.49345e+01 1.62000e+00 74 2019 1 1.52818e+01 1.54177e+00 76 2019 2 1.67019e+01 2.91089e+00 102 2019 3 1.78082e+01 1.87521e+00 297 2019 4 2.02352e+01 1.80928e+00 304 2019 5 2.68384e+01 2.98754e+00 679 2019 6 2.90728e+01 1.80813e+00 384 2019 7 3.00582e+01 1.80591e+00 430 2019 8 3.02073e+01 1.78505e+00 470 2019 9 2.97294e+01 1.93429e+00 783 2019 10 2.77887e+01 2.88706e+00 457 2019 11 1.87260e+01 1.43158e+00 218 2019 12 1.71528e+01 1.30924e+00 144 2020 1 1.52539e+01 1.51118e+00 209 2020 2 1.51984e+01 1.50953e+00 292 2020 3 2.14647e+01 3.66969e+00 389 2020 4 2.26211e+01 1.51851e+00 281 2020 5 2.46543e+01 2.69000e+00 597 2020 6 2.84428e+01 1.77400e+00 409 2020 7 2.94256e+01 1.66261e+00 485 2020 8 3.07776e+01 1.51048e+00 425 2020 9 2.86709e+01 2.92670e+00 348 2020 10 2.41853e+01 1.61703e+00 488 2020 11 2.10627e+01 1.69622e+00 476 2020 12 1.63429e+01 1.35268e+00 111 2021 1 1.50044e+01 1.23239e+00 188 2021 2 1.42218e+01 2.60306e+00 218 2021 3 1.80651e+01 2.81999e+00 265 2021 4 2.01071e+01 2.08187e+00 447 2021 5 2.45690e+01 2.57386e+00 510 2021 6 2.77045e+01 1.96731e+00 344 2021 7 2.92136e+01 1.90723e+00 400 2021 8 2.96547e+01 1.77299e+00 346 2021 9 2.73678e+01 1.82582e+00 548 2021 10 2.44058e+01 2.13927e+00 331 2021 11 1.87098e+01 1.57241e+00 499 2021 12 1.72285e+01 1.54171e+00 257 2022 1 1.42448e+01 2.80115e+00 259 2022 2 1.50932e+01 2.36332e+00 348 2022 3 1.85114e+01 2.15911e+00 540 2022 4 2.11929e+01 1.69967e+00 359 2022 5 2.63433e+01 1.67176e+00 615 2022 6 2.94131e+01 2.30754e+00 574 2022 7 2.95038e+01 1.72216e+00 531 2022 8 2.98444e+01 1.67767e+00 452 2022 9 2.83905e+01 1.97300e+00 554 2022 10 2.31471e+01 2.13264e+00 488 2022 11 2.04494e+01 2.36234e+00 386 2022 12 1.70842e+01 2.88839e+00 307 2023 1 1.60331e+01 2.10315e+00 447 2023 2 1.68991e+01 2.89696e+00 296 2023 3 2.02752e+01 2.34404e+00 283 2023 4 2.18342e+01 1.83319e+00 303 2023 5 2.57487e+01 2.60806e+00 519 2023 6 2.83115e+01 2.24466e+00 470 2023 7 3.04970e+01 1.62951e+00 596 2023 8 3.15756e+01 1.47761e+00 731 2023 9 2.91078e+01 1.80910e+00 644 2023 10 2.42260e+01 2.24017e+00 568 2023 11 1.88932e+01 1.92291e+00 382 2023 12 1.42811e+01 1.78085e+00 263 2024 1 1.28512e+01 1.41331e+00 265 2024 2 1.52189e+01 1.80606e+00 345 2024 3 1.87116e+01 1.85549e+00 292 2024 4 2.17063e+01 1.67033e+00 48