YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.82244e+01 7.40052e-01 32 2000 3 2.08724e+01 1.29472e+00 160 2000 4 2.20615e+01 1.46878e+00 144 2000 5 2.62077e+01 1.80850e+00 191 2000 6 2.84912e+01 7.13325e-01 96 2000 7 2.97674e+01 8.98932e-01 112 2000 8 2.94426e+01 5.57974e-01 56 2000 9 2.59564e+01 1.72961e+00 80 2000 10 2.29275e+01 1.31383e+00 187 2000 11 2.05714e+01 2.74417e+00 100 2000 12 1.75662e+01 5.04842e-01 37 2001 1 1.22156e+01 3.12867e-01 44 2001 2 1.82703e+01 1.61683e+00 80 2001 3 1.74695e+01 1.69206e+00 64 2001 4 2.12105e+01 2.04752e+00 172 2001 5 2.51562e+01 1.61505e+00 214 2001 6 2.76065e+01 1.28161e+00 64 2001 7 2.75008e+01 1.21952e+00 32 2001 8 2.82972e+01 1.94797e+00 160 2001 9 2.62838e+01 1.53962e+00 96 2001 10 2.18416e+01 1.78183e+00 112 2001 11 1.94891e+01 1.01305e+00 215 2001 12 1.92809e+01 2.15231e+00 151 2002 1 1.48728e+01 5.10199e-02 16 2002 2 1.46303e+01 9.34063e-01 80 2002 3 1.74833e+01 4.70698e+00 35 2002 4 2.37697e+01 2.48932e+00 176 2002 5 2.65080e+01 2.23143e+00 196 2002 6 2.85317e+01 4.39903e-01 112 2002 7 2.88390e+01 1.78879e+00 482 2002 8 2.91965e+01 1.27390e+00 580 2002 9 2.84039e+01 1.23448e+00 398 2002 10 2.69625e+01 2.07499e+00 470 2002 11 1.98836e+01 2.09710e+00 281 2002 12 1.50889e+01 1.07274e+00 141 2003 1 1.28196e+01 1.25026e+00 333 2003 2 1.51037e+01 1.42148e+00 294 2003 3 2.00065e+01 1.58176e+00 296 2003 4 2.14112e+01 2.12078e+00 625 2003 5 2.59792e+01 1.13903e+00 645 2003 6 2.79640e+01 1.80281e+00 465 2003 7 2.87331e+01 1.28684e+00 396 2003 8 2.83235e+01 1.05447e+00 468 2003 9 2.74866e+01 1.17693e+00 487 2003 10 2.32353e+01 1.08525e+00 560 2003 11 2.14051e+01 2.01493e+00 652 2003 12 1.52651e+01 1.41676e+00 178 2004 1 1.37817e+01 1.00490e+00 300 2004 2 1.38231e+01 1.67471e+00 193 2004 3 1.87592e+01 1.95886e+00 674 2004 4 2.09364e+01 2.25019e+00 614 2004 5 2.65089e+01 1.85366e+00 921 2004 6 2.91528e+01 1.15953e+00 524 2004 7 2.94312e+01 1.57941e+00 556 2004 8 2.96120e+01 1.42292e+00 556 2004 9 2.74131e+01 2.21975e+00 527 2004 10 2.50582e+01 1.65315e+00 662 2004 11 2.21281e+01 2.59628e+00 484 2004 12 1.66583e+01 1.77768e+00 176 2005 1 1.43637e+01 1.73772e+00 212 2005 2 1.50929e+01 1.13192e+00 342 2005 3 1.65574e+01 1.81501e+00 522 2005 4 2.00854e+01 1.46081e+00 560 2005 5 2.48040e+01 2.67757e+00 733 2005 6 2.83464e+01 1.38190e+00 541 2005 7 2.90764e+01 1.71136e+00 665 2005 8 2.94916e+01 1.68791e+00 489 2005 9 2.78388e+01 1.53850e+00 588 2005 10 2.53460e+01 2.00020e+00 532 2005 11 2.08777e+01 2.07444e+00 367 2005 12 1.62884e+01 1.63329e+00 190 2006 1 1.55195e+01 1.57822e+00 341 2006 2 1.49645e+01 1.81608e+00 446 2006 3 1.86519e+01 1.48138e+00 682 2006 4 2.29871e+01 2.28720e+00 833 2006 5 2.53683e+01 1.95739e+00 803 2006 6 2.86213e+01 1.61874e+00 811 2006 7 3.00705e+01 1.52755e+00 551 2006 8 3.04396e+01 9.88205e-01 721 2006 9 2.84727e+01 1.51139e+00 607 2006 10 2.46427e+01 2.38845e+00 748 2006 11 1.85808e+01 2.03617e+00 379 2006 12 1.64763e+01 1.49011e+00 161 2007 1 1.51011e+01 1.66142e+00 148 2007 2 1.41029e+01 1.78749e+00 385 2007 3 1.91442e+01 2.18217e+00 812 2007 4 2.11851e+01 1.93591e+00 583 2007 5 2.46831e+01 1.05355e+00 839 2007 6 2.78987e+01 1.95016e+00 590 2007 7 2.96178e+01 1.45966e+00 575 2007 8 3.03658e+01 1.54639e+00 578 2007 9 2.84045e+01 1.43139e+00 569 2007 10 2.57929e+01 1.84091e+00 405 2007 11 1.92086e+01 1.21373e+00 568 2007 12 1.81700e+01 1.43249e+00 286 2008 1 1.55792e+01 1.57787e+00 112 2008 2 1.66784e+01 1.64922e+00 403 2008 3 1.77471e+01 2.03437e+00 569 2008 4 2.14448e+01 1.96994e+00 608 2008 5 2.49463e+01 1.79730e+00 800 2008 6 2.90700e+01 1.40621e+00 668 2008 7 2.91568e+01 1.18551e+00 607 2008 8 2.84695e+01 1.45704e+00 402 2008 9 2.77422e+01 2.13878e+00 566 2008 10 2.38070e+01 2.12660e+00 627 2008 11 1.73065e+01 2.16198e+00 428 2008 12 1.59732e+01 1.57034e+00 265 2009 1 1.57763e+01 1.79393e+00 380 2009 2 1.44776e+01 1.96941e+00 539 2009 3 1.87660e+01 2.66772e+00 459 2009 4 2.13644e+01 2.12274e+00 608 2009 5 2.57859e+01 1.43506e+00 603 2009 6 2.81984e+01 2.11623e+00 718 2009 7 2.89170e+01 1.26621e+00 584 2009 8 2.89243e+01 1.73395e+00 482 2009 9 2.80997e+01 1.26019e+00 498 2009 10 2.51062e+01 3.44610e+00 571 2009 11 1.91229e+01 1.80104e+00 361 2009 12 1.48371e+01 3.23248e+00 106 2010 1 1.40845e+01 1.86192e+00 145 2010 2 1.13305e+01 1.64521e+00 251 2010 3 1.54787e+01 2.12656e+00 469 2010 4 2.16887e+01 1.31718e+00 612 2010 5 2.65464e+01 2.03125e+00 759 2010 6 3.07401e+01 1.30422e+00 727 2010 7 2.99485e+01 1.17326e+00 647 2010 8 2.93142e+01 1.49278e+00 334 2010 9 2.90236e+01 1.62629e+00 650 2010 10 2.38599e+01 1.33249e+00 923 2010 11 2.00618e+01 1.61425e+00 611 2010 12 1.42626e+01 2.32545e+00 318 2011 1 1.17227e+01 1.25902e+00 344 2011 2 1.53216e+01 3.09673e+00 283 2011 3 1.95925e+01 1.92889e+00 577 2011 4 2.32735e+01 1.73973e+00 836 2011 5 2.56572e+01 2.11099e+00 1003 2011 6 2.94651e+01 1.54824e+00 701 2011 7 3.02045e+01 1.15405e+00 382 2011 8 3.03755e+01 1.02709e+00 714 2011 9 2.75913e+01 1.17544e+00 609 2011 10 2.31852e+01 2.13678e+00 602 2011 11 1.85159e+01 1.40569e+00 414 2011 12 1.60394e+01 1.03194e+00 267 2012 1 1.58453e+01 1.88793e+00 437 2012 2 1.54036e+01 1.54302e+00 121 2012 3 2.19114e+01 2.28161e+00 629 2012 4 2.31931e+01 1.39936e+00 849 2012 5 2.72758e+01 1.33540e+00 788 2012 6 2.72780e+01 1.50771e+00 588 2012 7 2.85542e+01 1.61516e+00 463 2012 8 2.91587e+01 1.37059e+00 504 2012 9 2.79492e+01 1.49479e+00 497 2012 10 2.46229e+01 1.98630e+00 649 2012 11 1.85416e+01 1.55148e+00 529 2012 12 1.77370e+01 1.40666e+00 279 2013 1 1.67969e+01 1.69364e+00 322 2013 2 1.60742e+01 1.51846e+00 378 2013 3 1.61201e+01 1.49776e+00 563 2013 4 2.09956e+01 1.76133e+00 504 2013 5 2.43280e+01 2.65970e+00 642 2013 6 2.85840e+01 1.64044e+00 573 2013 7 2.78893e+01 1.75269e+00 326 2013 8 2.92870e+01 1.79233e+00 447 2013 9 2.91674e+01 1.41321e+00 660 2013 10 2.46953e+01 2.17307e+00 653 2013 11 2.01036e+01 2.27988e+00 263 2013 12 1.75300e+01 1.98481e+00 311 2014 1 1.28934e+01 1.69873e+00 229 2014 2 1.41606e+01 1.67043e+00 237 2014 3 1.71175e+01 1.82734e+00 551 2014 4 2.02558e+01 1.87435e+00 493 2014 5 2.44917e+01 2.00160e+00 684 2014 6 2.87231e+01 1.63654e+00 591 2014 7 2.88985e+01 1.29843e+00 748 2014 8 2.98532e+01 1.39998e+00 697 2014 9 2.85383e+01 2.07601e+00 654 2014 10 2.48741e+01 1.90690e+00 765 2014 11 1.67468e+01 2.07466e+00 419 2014 12 1.61393e+01 1.35555e+00 365 2015 1 1.45959e+01 1.15154e+00 295 2015 2 1.38465e+01 1.47134e+00 464 2015 3 1.89716e+01 2.23296e+00 450 2015 4 2.26577e+01 2.08081e+00 304 2015 5 2.61838e+01 2.28634e+00 866 2015 6 2.94382e+01 1.65788e+00 566 2015 7 2.91600e+01 1.93587e+00 584 2015 8 2.98453e+01 1.67209e+00 598 2015 9 2.76809e+01 1.38113e+00 302 2015 10 2.37942e+01 1.79165e+00 584 2015 11 2.20912e+01 3.19398e+00 394 2015 12 1.75126e+01 1.50607e+00 262 2016 1 1.40199e+01 1.26412e+00 226 2016 2 1.51338e+01 1.65075e+00 380 2016 3 1.91343e+01 1.82617e+00 474 2016 4 2.20292e+01 1.67881e+00 614 2016 5 2.53275e+01 1.53240e+00 642 2016 6 2.94747e+01 1.47280e+00 596 2016 7 3.06416e+01 1.48253e+00 794 2016 8 2.99473e+01 1.84235e+00 635 2016 9 2.89810e+01 1.17216e+00 607 2016 10 2.52382e+01 1.81038e+00 749 2016 11 2.06753e+01 2.33409e+00 507 2016 12 1.76973e+01 1.34161e+00 370 2017 1 1.69938e+01 1.89794e+00 257 2017 2 1.81856e+01 1.92520e+00 541 2017 3 1.92487e+01 2.76749e+00 670 2017 4 2.29518e+01 1.80740e+00 614 2017 5 2.48700e+01 1.95111e+00 507 2017 6 2.81731e+01 1.82115e+00 318 2017 7 2.99010e+01 1.71888e+00 524 2017 8 2.99101e+01 1.41052e+00 480 2017 9 2.81583e+01 1.73792e+00 569 2017 10 2.48095e+01 2.34424e+00 579 2017 11 2.03063e+01 1.95154e+00 608 2017 12 1.74307e+01 2.41442e+00 248 2018 1 1.28488e+01 1.42207e+00 147 2018 2 1.91576e+01 2.88722e+00 304 2018 3 1.88637e+01 2.08673e+00 686 2018 4 2.14504e+01 1.43118e+00 696 2018 5 2.57037e+01 2.11521e+00 679 2018 6 2.90707e+01 1.64605e+00 499 2018 7 2.97133e+01 1.55096e+00 543 2018 8 2.92023e+01 1.63870e+00 583 2018 9 2.99724e+01 1.32360e+00 678 2018 10 2.63627e+01 2.45186e+00 671 2018 11 1.89689e+01 3.07007e+00 213 2018 12 1.51525e+01 1.66079e+00 289 2019 1 1.48268e+01 1.92988e+00 399 2019 2 1.71702e+01 1.96720e+00 203 2019 3 1.81376e+01 2.01855e+00 522 2019 4 2.19979e+01 1.84871e+00 528 2019 5 2.76417e+01 2.15328e+00 851 2019 6 2.89028e+01 1.86993e+00 535 2019 7 2.95968e+01 1.64076e+00 528 2019 8 3.01471e+01 1.17311e+00 498 2019 9 2.93399e+01 1.29659e+00 833 2019 10 2.70361e+01 2.03172e+00 581 2019 11 1.90032e+01 2.21069e+00 461 2019 12 1.66833e+01 1.43384e+00 290 2020 1 1.61141e+01 1.81181e+00 510 2020 2 1.58416e+01 1.64576e+00 368 2020 3 2.15256e+01 3.78053e+00 536 2020 4 2.30618e+01 1.21497e+00 407 2020 5 2.44290e+01 1.79243e+00 732 2020 6 2.90528e+01 1.54200e+00 501 2020 7 2.92803e+01 1.08172e+00 491 2020 8 3.09682e+01 8.29633e-01 399 2020 9 2.87442e+01 2.07314e+00 434 2020 10 2.51364e+01 1.45490e+00 626 2020 11 2.14149e+01 1.89638e+00 642 2020 12 1.55782e+01 1.84831e+00 568 2021 1 1.47051e+01 1.62700e+00 328 2021 2 1.50198e+01 2.00646e+00 412 2021 3 1.86130e+01 1.93742e+00 567 2021 4 2.10512e+01 1.93412e+00 624 2021 5 2.53262e+01 1.99470e+00 693 2021 6 2.78669e+01 1.74939e+00 391 2021 7 2.96852e+01 1.32336e+00 430 2021 8 2.96226e+01 1.53629e+00 496 2021 9 2.73995e+01 1.54304e+00 513 2021 10 2.60062e+01 1.52834e+00 466 2021 11 1.87452e+01 1.59166e+00 613 2021 12 1.78585e+01 1.97537e+00 483 2022 1 1.50835e+01 3.28734e+00 625 2022 2 1.58537e+01 2.95654e+00 496 2022 3 1.96770e+01 1.27195e+00 730 2022 4 2.24423e+01 1.32083e+00 436 2022 5 2.62889e+01 1.28089e+00 745 2022 6 2.97550e+01 1.62789e+00 649 2022 7 3.01012e+01 1.43328e+00 517 2022 8 3.02720e+01 1.68483e+00 451 2022 9 2.83871e+01 1.78235e+00 518 2022 10 2.34462e+01 2.06528e+00 706 2022 11 2.12090e+01 2.31710e+00 448 2022 12 1.77151e+01 3.13829e+00 560 2023 1 1.58488e+01 1.48248e+00 712 2023 2 1.78208e+01 2.49735e+00 544 2023 3 2.03819e+01 2.23999e+00 568 2023 4 2.27666e+01 1.16053e+00 474 2023 5 2.50855e+01 1.96800e+00 686 2023 6 2.79904e+01 1.83819e+00 573 2023 7 3.04133e+01 1.26178e+00 556 2023 8 3.11063e+01 1.08520e+00 660 2023 9 2.92923e+01 1.61127e+00 669 2023 10 2.35914e+01 1.56113e+00 704 2023 11 1.99368e+01 1.87621e+00 426 2023 12 1.41560e+01 1.48082e+00 352 2024 1 1.37797e+01 1.34077e+00 312 2024 2 1.54384e+01 1.62473e+00 501 2024 3 1.95730e+01 1.46292e+00 416 2024 4 2.07293e+01 5.35500e-01 48