YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.78600e+01 3.40955e-02 16 2000 3 1.95188e+01 9.13117e-01 154 2000 4 2.21022e+01 1.42801e+00 124 2000 5 2.65433e+01 1.91284e+00 104 2000 6 2.85890e+01 1.50176e+00 118 2000 7 2.97451e+01 1.95523e+00 115 2000 8 2.85310e+01 6.59283e-01 34 2000 9 2.61773e+01 1.74062e+00 52 2000 10 2.28569e+01 1.73829e+00 154 2000 11 2.21628e+01 2.17314e+00 61 2000 12 nan nan 0 2001 1 1.16600e+01 0.00000e+00 6 2001 2 1.67532e+01 1.65826e+00 66 2001 3 1.64548e+01 1.61936e+00 54 2001 4 2.11405e+01 2.21325e+00 85 2001 5 2.47495e+01 1.90291e+00 182 2001 6 2.95260e+01 1.43779e+00 30 2001 7 2.82098e+01 9.47381e-01 46 2001 8 2.84911e+01 1.00929e+00 144 2001 9 2.68966e+01 2.19011e+00 115 2001 10 2.24493e+01 1.33221e+00 134 2001 11 2.00711e+01 1.20126e+00 145 2001 12 1.90485e+01 1.52065e+00 125 2002 1 nan nan 0 2002 2 1.45428e+01 7.02055e-01 18 2002 3 1.77694e+01 3.42837e+00 55 2002 4 2.34682e+01 2.54562e+00 140 2002 5 2.53429e+01 2.09555e+00 128 2002 6 2.82950e+01 1.53829e+00 125 2002 7 2.97554e+01 1.57998e+00 429 2002 8 2.89117e+01 1.31201e+00 411 2002 9 2.87040e+01 1.51773e+00 370 2002 10 2.68647e+01 2.28000e+00 412 2002 11 1.97960e+01 2.44473e+00 223 2002 12 1.54355e+01 9.10176e-01 182 2003 1 1.27447e+01 9.82874e-01 167 2003 2 1.47052e+01 1.73868e+00 163 2003 3 2.03814e+01 2.32691e+00 200 2003 4 2.09068e+01 2.61246e+00 336 2003 5 2.58568e+01 1.52979e+00 420 2003 6 2.84084e+01 1.89955e+00 370 2003 7 2.94834e+01 2.03635e+00 345 2003 8 2.84518e+01 1.53440e+00 322 2003 9 2.75689e+01 1.50511e+00 459 2003 10 2.33826e+01 1.38436e+00 399 2003 11 2.11076e+01 2.11721e+00 514 2003 12 1.52148e+01 1.07504e+00 31 2004 1 1.34666e+01 5.69418e-01 49 2004 2 1.34679e+01 1.67139e+00 122 2004 3 1.88721e+01 2.29683e+00 431 2004 4 1.99283e+01 2.20572e+00 414 2004 5 2.61272e+01 2.51656e+00 665 2004 6 2.91257e+01 1.47946e+00 395 2004 7 2.94736e+01 1.60885e+00 541 2004 8 2.93341e+01 1.76222e+00 525 2004 9 2.69417e+01 1.83137e+00 454 2004 10 2.46207e+01 1.68060e+00 484 2004 11 2.07407e+01 2.60410e+00 276 2004 12 1.71746e+01 1.62857e+00 82 2005 1 1.54171e+01 2.31796e+00 156 2005 2 1.49522e+01 1.80082e+00 262 2005 3 1.66355e+01 2.19512e+00 351 2005 4 2.04931e+01 1.81276e+00 491 2005 5 2.50669e+01 2.74613e+00 582 2005 6 2.86834e+01 1.86342e+00 515 2005 7 2.93593e+01 1.68415e+00 577 2005 8 2.92760e+01 1.85057e+00 451 2005 9 2.81515e+01 1.65078e+00 623 2005 10 2.46647e+01 2.25406e+00 473 2005 11 1.98412e+01 1.87437e+00 347 2005 12 1.47042e+01 9.72101e-01 115 2006 1 1.53251e+01 1.29281e+00 195 2006 2 1.40326e+01 1.44149e+00 221 2006 3 1.80703e+01 1.81628e+00 395 2006 4 2.29263e+01 2.31307e+00 372 2006 5 2.59113e+01 2.11901e+00 481 2006 6 2.90499e+01 1.54299e+00 521 2006 7 3.02560e+01 1.98532e+00 461 2006 8 3.04787e+01 1.26600e+00 466 2006 9 2.77156e+01 1.78794e+00 469 2006 10 2.47336e+01 2.74944e+00 391 2006 11 1.85026e+01 1.79474e+00 252 2006 12 1.61682e+01 1.53846e+00 111 2007 1 1.39041e+01 1.42401e+00 76 2007 2 1.33222e+01 1.88551e+00 197 2007 3 1.85140e+01 2.33323e+00 431 2007 4 2.05301e+01 2.00225e+00 311 2007 5 2.43620e+01 1.46538e+00 638 2007 6 2.80049e+01 1.66577e+00 441 2007 7 2.96143e+01 1.51082e+00 366 2007 8 2.96744e+01 1.53182e+00 493 2007 9 2.83632e+01 1.49872e+00 406 2007 10 2.51180e+01 2.04991e+00 341 2007 11 1.93462e+01 1.39264e+00 391 2007 12 1.77252e+01 1.67054e+00 269 2008 1 1.50032e+01 1.76210e+00 130 2008 2 1.66612e+01 1.69921e+00 229 2008 3 1.74697e+01 1.83495e+00 412 2008 4 2.21644e+01 2.16297e+00 357 2008 5 2.54594e+01 2.18169e+00 435 2008 6 2.92787e+01 1.46608e+00 516 2008 7 2.92636e+01 1.52476e+00 458 2008 8 2.80608e+01 2.00757e+00 305 2008 9 2.70332e+01 1.77488e+00 408 2008 10 2.35527e+01 1.94956e+00 490 2008 11 1.86503e+01 1.43988e+00 319 2008 12 1.65087e+01 1.03799e+00 164 2009 1 1.56351e+01 2.21819e+00 241 2009 2 1.42962e+01 1.60364e+00 285 2009 3 1.83200e+01 2.44203e+00 415 2009 4 2.13875e+01 2.56736e+00 382 2009 5 2.61145e+01 2.23035e+00 389 2009 6 2.93899e+01 2.03222e+00 725 2009 7 2.90092e+01 1.85754e+00 574 2009 8 2.93141e+01 1.62352e+00 542 2009 9 2.83279e+01 1.28343e+00 425 2009 10 2.48299e+01 2.90981e+00 440 2009 11 1.89731e+01 1.74938e+00 227 2009 12 1.38448e+01 1.65553e+00 88 2010 1 1.35514e+01 2.55609e+00 172 2010 2 1.13861e+01 1.63778e+00 226 2010 3 1.50574e+01 1.88136e+00 250 2010 4 2.16162e+01 1.63974e+00 402 2010 5 2.66272e+01 2.86709e+00 524 2010 6 3.06152e+01 1.60291e+00 590 2010 7 2.97582e+01 1.64197e+00 567 2010 8 2.99352e+01 1.85803e+00 354 2010 9 2.90586e+01 1.79894e+00 574 2010 10 2.35904e+01 1.45510e+00 573 2010 11 1.89942e+01 1.50599e+00 436 2010 12 1.39745e+01 2.36143e+00 205 2011 1 1.13537e+01 1.16396e+00 190 2011 2 1.49017e+01 2.99372e+00 227 2011 3 1.97106e+01 2.28748e+00 444 2011 4 2.30844e+01 2.07653e+00 579 2011 5 2.55925e+01 2.28542e+00 565 2011 6 2.99545e+01 1.76265e+00 630 2011 7 3.02330e+01 1.41963e+00 446 2011 8 2.99834e+01 1.68981e+00 620 2011 9 2.73394e+01 1.30848e+00 558 2011 10 2.26763e+01 1.82710e+00 408 2011 11 1.81196e+01 1.07612e+00 320 2011 12 1.56883e+01 8.52982e-01 199 2012 1 1.50821e+01 1.64177e+00 307 2012 2 1.52405e+01 1.65635e+00 139 2012 3 2.07264e+01 3.01825e+00 381 2012 4 2.29848e+01 1.52506e+00 519 2012 5 2.71192e+01 1.70739e+00 643 2012 6 2.73073e+01 1.29388e+00 457 2012 7 2.86926e+01 1.76961e+00 467 2012 8 2.84195e+01 1.93186e+00 422 2012 9 2.72384e+01 1.87501e+00 604 2012 10 2.39960e+01 2.32111e+00 559 2012 11 1.79840e+01 1.63534e+00 378 2012 12 1.74240e+01 1.54001e+00 239 2013 1 1.65692e+01 2.02239e+00 218 2013 2 1.64008e+01 1.58683e+00 201 2013 3 1.60429e+01 1.73448e+00 393 2013 4 2.13782e+01 2.07329e+00 346 2013 5 2.46890e+01 2.68622e+00 522 2013 6 2.84343e+01 1.25887e+00 438 2013 7 2.81476e+01 1.10142e+00 192 2013 8 2.88809e+01 2.53199e+00 440 2013 9 2.92272e+01 2.23784e+00 596 2013 10 2.40935e+01 1.79413e+00 314 2013 11 1.93870e+01 2.12389e+00 284 2013 12 1.66577e+01 2.07459e+00 179 2014 1 1.21321e+01 1.05265e+00 114 2014 2 1.35487e+01 2.06205e+00 168 2014 3 1.70875e+01 1.89160e+00 328 2014 4 2.08260e+01 2.54266e+00 365 2014 5 2.56241e+01 2.42438e+00 420 2014 6 2.91364e+01 1.86023e+00 583 2014 7 2.87028e+01 1.59301e+00 529 2014 8 2.96955e+01 1.37602e+00 559 2014 9 2.90409e+01 1.47187e+00 381 2014 10 2.45427e+01 2.03958e+00 595 2014 11 1.66967e+01 2.34063e+00 218 2014 12 1.71065e+01 1.78785e+00 214 2015 1 1.40371e+01 1.21371e+00 192 2015 2 1.34426e+01 1.09170e+00 269 2015 3 1.95594e+01 2.74921e+00 288 2015 4 2.22410e+01 1.85777e+00 281 2015 5 2.68379e+01 2.60385e+00 512 2015 6 2.97082e+01 1.81987e+00 600 2015 7 2.95392e+01 1.61788e+00 427 2015 8 2.97386e+01 1.62373e+00 601 2015 9 2.79672e+01 1.69597e+00 425 2015 10 2.38959e+01 1.64538e+00 501 2015 11 2.17082e+01 2.63875e+00 329 2015 12 1.82599e+01 2.18946e+00 190 2016 1 1.34298e+01 1.25206e+00 173 2016 2 1.49528e+01 1.72352e+00 341 2016 3 1.80060e+01 1.83239e+00 339 2016 4 2.17896e+01 1.97128e+00 348 2016 5 2.59914e+01 2.11228e+00 459 2016 6 2.92278e+01 1.95777e+00 596 2016 7 3.09105e+01 1.45942e+00 603 2016 8 3.00092e+01 1.40877e+00 506 2016 9 2.90198e+01 1.39962e+00 678 2016 10 2.54626e+01 1.40393e+00 566 2016 11 2.05654e+01 2.06615e+00 440 2016 12 1.80986e+01 1.48431e+00 292 2017 1 1.62506e+01 1.65721e+00 168 2017 2 1.80080e+01 1.86590e+00 389 2017 3 1.84697e+01 2.41895e+00 392 2017 4 2.25364e+01 2.29440e+00 498 2017 5 2.51476e+01 2.24774e+00 385 2017 6 2.77025e+01 2.17847e+00 236 2017 7 3.05715e+01 2.05305e+00 511 2017 8 2.99340e+01 1.72025e+00 358 2017 9 2.75733e+01 1.93486e+00 493 2017 10 2.49652e+01 1.88109e+00 502 2017 11 2.05959e+01 2.31775e+00 441 2017 12 1.64527e+01 2.23323e+00 148 2018 1 1.24825e+01 1.32396e+00 93 2018 2 1.96865e+01 3.81906e+00 357 2018 3 1.86037e+01 2.00623e+00 452 2018 4 2.11689e+01 1.29886e+00 467 2018 5 2.60324e+01 1.98101e+00 459 2018 6 2.95905e+01 2.82596e+00 452 2018 7 2.99606e+01 1.80197e+00 588 2018 8 2.91177e+01 2.27041e+00 490 2018 9 2.98157e+01 1.67673e+00 596 2018 10 2.61664e+01 2.50892e+00 698 2018 11 2.02357e+01 2.58850e+00 114 2018 12 1.52239e+01 1.83731e+00 180 2019 1 1.52338e+01 2.36155e+00 340 2019 2 1.76045e+01 1.99395e+00 201 2019 3 1.77355e+01 1.63175e+00 282 2019 4 2.16789e+01 1.71368e+00 370 2019 5 2.78756e+01 2.40394e+00 655 2019 6 2.95656e+01 1.77261e+00 404 2019 7 3.02241e+01 1.61726e+00 512 2019 8 3.05072e+01 1.77502e+00 417 2019 9 2.98702e+01 2.10319e+00 751 2019 10 2.79379e+01 2.31038e+00 518 2019 11 1.93216e+01 1.81383e+00 361 2019 12 1.65437e+01 1.66097e+00 237 2020 1 1.61551e+01 2.09914e+00 420 2020 2 1.58412e+01 1.72793e+00 305 2020 3 2.12819e+01 3.89268e+00 366 2020 4 2.31551e+01 1.49938e+00 294 2020 5 2.49696e+01 2.09251e+00 582 2020 6 2.91536e+01 1.47348e+00 481 2020 7 2.93272e+01 1.05356e+00 414 2020 8 3.12879e+01 1.62924e+00 447 2020 9 2.94758e+01 2.63023e+00 441 2020 10 2.49209e+01 1.65259e+00 505 2020 11 2.12064e+01 1.77176e+00 633 2020 12 1.58714e+01 1.80380e+00 351 2021 1 1.53496e+01 1.53685e+00 260 2021 2 1.60780e+01 2.74686e+00 238 2021 3 1.90682e+01 2.24247e+00 380 2021 4 2.14649e+01 2.03309e+00 480 2021 5 2.52557e+01 2.08886e+00 409 2021 6 2.82917e+01 1.48702e+00 403 2021 7 3.06750e+01 2.01310e+00 406 2021 8 3.06069e+01 2.09543e+00 448 2021 9 2.80025e+01 2.19799e+00 460 2021 10 2.54233e+01 1.92636e+00 508 2021 11 1.91008e+01 1.94425e+00 519 2021 12 1.77607e+01 1.59237e+00 424 2022 1 1.55125e+01 3.15702e+00 360 2022 2 1.67681e+01 3.05385e+00 361 2022 3 1.92196e+01 1.99572e+00 550 2022 4 2.27511e+01 1.95276e+00 328 2022 5 2.68843e+01 1.56405e+00 615 2022 6 3.02043e+01 2.02710e+00 655 2022 7 3.02004e+01 1.83838e+00 476 2022 8 3.06792e+01 1.67856e+00 566 2022 9 2.82514e+01 1.99034e+00 629 2022 10 2.36294e+01 2.12364e+00 623 2022 11 2.07991e+01 2.42079e+00 397 2022 12 1.82878e+01 2.50736e+00 427 2023 1 1.60774e+01 1.71796e+00 492 2023 2 1.79176e+01 2.63018e+00 374 2023 3 2.03690e+01 2.68252e+00 404 2023 4 2.32207e+01 1.69772e+00 502 2023 5 2.51847e+01 2.35148e+00 471 2023 6 2.84674e+01 2.41289e+00 459 2023 7 3.12482e+01 1.73813e+00 637 2023 8 3.14333e+01 1.44924e+00 634 2023 9 2.95330e+01 1.71402e+00 662 2023 10 2.40304e+01 2.22870e+00 619 2023 11 1.95694e+01 1.87882e+00 391 2023 12 1.47396e+01 1.84206e+00 394 2024 1 1.34090e+01 1.65005e+00 327 2024 2 1.56355e+01 1.90741e+00 389 2024 3 1.93646e+01 1.67178e+00 307 2024 4 2.18640e+01 1.00935e+00 48