YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.73373e+01 1.20081e-01 15 2000 3 1.95277e+01 1.20004e+00 128 2000 4 2.15757e+01 1.81535e+00 75 2000 5 2.56028e+01 2.34578e+00 64 2000 6 2.76084e+01 1.55897e+00 74 2000 7 2.91029e+01 1.26567e+00 133 2000 8 2.76153e+01 7.26730e-01 35 2000 9 2.58796e+01 1.14367e+00 57 2000 10 2.23292e+01 1.05978e+00 63 2000 11 2.24006e+01 2.56389e+00 51 2000 12 nan nan 0 2001 1 1.25286e+01 9.73094e-01 21 2001 2 1.79543e+01 1.81275e+00 45 2001 3 1.50055e+01 2.72939e-01 32 2001 4 2.05369e+01 1.29368e+00 59 2001 5 2.46760e+01 2.86274e+00 136 2001 6 2.83513e+01 7.31299e-01 31 2001 7 2.73589e+01 4.64670e-01 57 2001 8 2.78100e+01 1.34402e+00 107 2001 9 2.60972e+01 5.89833e-01 36 2001 10 2.22354e+01 1.85911e+00 115 2001 11 1.94773e+01 6.85872e-01 79 2001 12 1.96197e+01 1.26937e+00 43 2002 1 nan nan 0 2002 2 1.31107e+01 6.06998e-01 38 2002 3 1.83407e+01 2.17353e+00 20 2002 4 2.31333e+01 3.02468e+00 89 2002 5 2.44058e+01 1.75016e+00 95 2002 6 2.72252e+01 1.69307e+00 129 2002 7 2.92314e+01 1.60385e+00 461 2002 8 2.86542e+01 1.47600e+00 418 2002 9 2.80090e+01 1.68969e+00 342 2002 10 2.68494e+01 2.07899e+00 342 2002 11 2.02507e+01 2.30593e+00 180 2002 12 1.57114e+01 8.21533e-01 60 2003 1 1.32056e+01 1.08264e+00 118 2003 2 1.42846e+01 2.13138e+00 106 2003 3 2.04003e+01 2.98241e+00 144 2003 4 2.08582e+01 2.42380e+00 379 2003 5 2.55272e+01 1.95066e+00 474 2003 6 2.78933e+01 2.44816e+00 295 2003 7 2.91994e+01 1.65009e+00 411 2003 8 2.81131e+01 1.48434e+00 329 2003 9 2.76336e+01 1.39921e+00 375 2003 10 2.31228e+01 1.54156e+00 341 2003 11 2.11440e+01 2.53038e+00 326 2003 12 1.52800e+01 8.03592e-01 19 2004 1 1.39382e+01 8.02867e-01 38 2004 2 1.46053e+01 1.73817e+00 47 2004 3 1.85269e+01 1.70322e+00 256 2004 4 2.04835e+01 2.16368e+00 258 2004 5 2.58195e+01 2.12571e+00 566 2004 6 2.86958e+01 1.72525e+00 511 2004 7 2.93047e+01 2.11097e+00 468 2004 8 2.93612e+01 2.00595e+00 487 2004 9 2.66829e+01 1.90651e+00 406 2004 10 2.44677e+01 2.01843e+00 477 2004 11 2.16877e+01 3.35900e+00 127 2004 12 1.67069e+01 1.41345e+00 49 2005 1 1.43881e+01 1.58473e+00 99 2005 2 1.55150e+01 1.91122e+00 164 2005 3 1.68636e+01 2.28423e+00 233 2005 4 2.05436e+01 2.07771e+00 322 2005 5 2.44932e+01 2.95949e+00 497 2005 6 2.87234e+01 2.06158e+00 537 2005 7 2.88705e+01 2.29012e+00 555 2005 8 2.91351e+01 1.90701e+00 455 2005 9 2.76036e+01 1.74079e+00 510 2005 10 2.53579e+01 1.97398e+00 353 2005 11 2.00777e+01 1.99116e+00 205 2005 12 1.55062e+01 1.61770e+00 108 2006 1 1.57103e+01 1.61263e+00 191 2006 2 1.49773e+01 1.60449e+00 77 2006 3 1.77504e+01 1.92619e+00 280 2006 4 2.28784e+01 2.42133e+00 380 2006 5 2.55194e+01 2.34753e+00 376 2006 6 2.83820e+01 1.94589e+00 417 2006 7 2.97289e+01 1.90307e+00 408 2006 8 2.97388e+01 1.49631e+00 452 2006 9 2.78980e+01 1.90219e+00 472 2006 10 2.51638e+01 1.78979e+00 238 2006 11 1.84469e+01 1.85990e+00 157 2006 12 1.69753e+01 1.26469e+00 78 2007 1 1.69493e+01 1.46142e+00 7 2007 2 1.41511e+01 2.07612e+00 174 2007 3 1.80940e+01 2.33061e+00 343 2007 4 1.95328e+01 2.08217e+00 226 2007 5 2.41403e+01 1.76503e+00 444 2007 6 2.76490e+01 1.79528e+00 378 2007 7 2.90687e+01 1.89185e+00 383 2007 8 2.94145e+01 1.51449e+00 429 2007 9 2.79559e+01 1.55584e+00 375 2007 10 2.52410e+01 1.61999e+00 269 2007 11 1.86635e+01 1.26632e+00 180 2007 12 1.66133e+01 1.33276e+00 129 2008 1 1.41242e+01 1.85690e+00 13 2008 2 1.68485e+01 1.74973e+00 186 2008 3 1.74665e+01 1.77815e+00 295 2008 4 2.13985e+01 2.38039e+00 254 2008 5 2.53185e+01 2.77038e+00 358 2008 6 2.88569e+01 2.06191e+00 483 2008 7 2.88004e+01 1.91236e+00 505 2008 8 2.78477e+01 1.78250e+00 412 2008 9 2.71520e+01 1.77369e+00 317 2008 10 2.36847e+01 1.76043e+00 350 2008 11 1.86194e+01 1.53745e+00 187 2008 12 1.68422e+01 1.77587e+00 121 2009 1 1.59370e+01 1.86216e+00 114 2009 2 1.48882e+01 1.24597e+00 97 2009 3 1.85866e+01 1.90208e+00 301 2009 4 2.11259e+01 2.20507e+00 395 2009 5 2.57015e+01 2.27119e+00 419 2009 6 2.92227e+01 2.32438e+00 609 2009 7 2.89703e+01 2.17059e+00 448 2009 8 2.88494e+01 1.87303e+00 449 2009 9 2.75552e+01 1.54851e+00 409 2009 10 2.56236e+01 3.04244e+00 370 2009 11 2.00871e+01 2.16923e+00 128 2009 12 1.41104e+01 1.43772e+00 69 2010 1 1.27368e+01 1.55402e+00 102 2010 2 1.18938e+01 1.89398e+00 110 2010 3 1.56717e+01 1.65304e+00 145 2010 4 2.13076e+01 1.75968e+00 314 2010 5 2.66277e+01 2.84036e+00 565 2010 6 3.00907e+01 1.91270e+00 642 2010 7 2.95730e+01 1.79518e+00 560 2010 8 2.94405e+01 1.84722e+00 353 2010 9 2.88381e+01 1.92722e+00 540 2010 10 2.38426e+01 1.57070e+00 420 2010 11 1.89406e+01 1.71703e+00 267 2010 12 1.42719e+01 2.43260e+00 107 2011 1 1.11561e+01 1.02006e+00 117 2011 2 1.58266e+01 2.79749e+00 155 2011 3 1.91009e+01 3.09887e+00 315 2011 4 2.28156e+01 2.43931e+00 400 2011 5 2.56113e+01 2.28110e+00 434 2011 6 2.96201e+01 1.74603e+00 488 2011 7 2.95645e+01 1.75404e+00 327 2011 8 3.03210e+01 1.56276e+00 638 2011 9 2.75698e+01 1.45398e+00 509 2011 10 2.30185e+01 2.19744e+00 323 2011 11 1.84644e+01 1.38603e+00 175 2011 12 1.53207e+01 1.01866e+00 143 2012 1 1.47567e+01 1.93205e+00 183 2012 2 1.68982e+01 1.89003e+00 46 2012 3 2.13184e+01 2.86855e+00 346 2012 4 2.27141e+01 1.71477e+00 443 2012 5 2.68025e+01 1.92504e+00 606 2012 6 2.68543e+01 1.60808e+00 338 2012 7 2.89397e+01 1.38153e+00 510 2012 8 2.85003e+01 1.69265e+00 339 2012 9 2.66168e+01 1.62529e+00 470 2012 10 2.48635e+01 2.05157e+00 514 2012 11 1.81652e+01 1.49128e+00 219 2012 12 1.65697e+01 1.06368e+00 180 2013 1 1.66171e+01 1.95936e+00 152 2013 2 1.62192e+01 1.37489e+00 141 2013 3 1.67668e+01 2.07373e+00 298 2013 4 2.10433e+01 2.28130e+00 283 2013 5 2.47506e+01 3.53869e+00 432 2013 6 2.86454e+01 1.75252e+00 419 2013 7 2.79157e+01 1.85363e+00 226 2013 8 2.88657e+01 2.19581e+00 437 2013 9 2.88371e+01 1.85788e+00 501 2013 10 2.43221e+01 1.78950e+00 403 2013 11 1.97186e+01 2.53223e+00 196 2013 12 1.77849e+01 2.86246e+00 163 2014 1 1.25176e+01 1.23123e+00 121 2014 2 1.40046e+01 2.87831e+00 116 2014 3 1.68948e+01 2.03970e+00 255 2014 4 1.98997e+01 2.64137e+00 217 2014 5 2.44381e+01 3.09826e+00 387 2014 6 2.83670e+01 2.12069e+00 536 2014 7 2.86183e+01 1.83555e+00 567 2014 8 2.95390e+01 1.64330e+00 444 2014 9 2.86470e+01 1.76730e+00 332 2014 10 2.47768e+01 2.23380e+00 456 2014 11 1.72397e+01 2.55954e+00 98 2014 12 1.75435e+01 1.86807e+00 134 2015 1 1.45805e+01 1.86905e+00 138 2015 2 1.37119e+01 1.38956e+00 162 2015 3 1.91024e+01 2.62229e+00 236 2015 4 2.16476e+01 2.85212e+00 202 2015 5 2.64824e+01 2.56405e+00 535 2015 6 2.97217e+01 1.84530e+00 455 2015 7 2.92566e+01 1.97510e+00 415 2015 8 2.95763e+01 1.94337e+00 564 2015 9 2.77869e+01 1.66987e+00 230 2015 10 2.35066e+01 1.48715e+00 379 2015 11 2.16753e+01 2.67172e+00 386 2015 12 1.83356e+01 2.41730e+00 118 2016 1 1.42436e+01 1.56461e+00 92 2016 2 1.43445e+01 1.59590e+00 141 2016 3 1.78141e+01 1.72684e+00 222 2016 4 2.11103e+01 1.77962e+00 371 2016 5 2.55581e+01 2.36641e+00 447 2016 6 2.94753e+01 2.08374e+00 549 2016 7 3.06787e+01 1.55819e+00 583 2016 8 2.97313e+01 1.74410e+00 406 2016 9 2.86617e+01 1.65698e+00 484 2016 10 2.50275e+01 1.46543e+00 507 2016 11 2.09107e+01 2.17705e+00 254 2016 12 1.82331e+01 9.39738e-01 215 2017 1 1.64029e+01 2.02911e+00 167 2017 2 1.81074e+01 1.87717e+00 396 2017 3 1.89136e+01 2.59126e+00 349 2017 4 2.27552e+01 1.99035e+00 424 2017 5 2.49669e+01 2.36772e+00 337 2017 6 2.79803e+01 2.16674e+00 294 2017 7 3.02619e+01 2.36282e+00 497 2017 8 2.96020e+01 1.80645e+00 458 2017 9 2.76664e+01 2.08771e+00 476 2017 10 2.48115e+01 2.14354e+00 337 2017 11 2.01963e+01 2.29515e+00 326 2017 12 1.67547e+01 1.76977e+00 87 2018 1 1.25862e+01 1.21072e+00 38 2018 2 1.94202e+01 2.88084e+00 339 2018 3 1.84698e+01 1.92278e+00 248 2018 4 2.07563e+01 1.61753e+00 372 2018 5 2.59539e+01 2.52027e+00 438 2018 6 2.94077e+01 2.19143e+00 468 2018 7 2.97189e+01 1.72599e+00 459 2018 8 2.87816e+01 1.74116e+00 403 2018 9 2.91079e+01 2.04181e+00 524 2018 10 2.62174e+01 2.34743e+00 433 2018 11 2.07230e+01 2.61547e+00 66 2018 12 1.60499e+01 1.35943e+00 89 2019 1 1.48849e+01 1.67375e+00 150 2019 2 1.73285e+01 1.67523e+00 148 2019 3 1.72663e+01 2.08792e+00 177 2019 4 2.10001e+01 1.94500e+00 288 2019 5 2.70000e+01 2.63483e+00 544 2019 6 2.91772e+01 2.16722e+00 296 2019 7 2.94008e+01 1.33845e+00 419 2019 8 3.04987e+01 1.97883e+00 386 2019 9 2.96267e+01 2.11804e+00 630 2019 10 2.72174e+01 2.55597e+00 455 2019 11 1.92164e+01 2.09836e+00 272 2019 12 1.66242e+01 1.86267e+00 204 2020 1 1.61867e+01 1.98815e+00 261 2020 2 1.60197e+01 1.35160e+00 221 2020 3 2.29686e+01 3.21049e+00 449 2020 4 2.34634e+01 1.76006e+00 180 2020 5 2.49062e+01 2.64791e+00 429 2020 6 2.89620e+01 2.18993e+00 396 2020 7 2.90689e+01 1.38036e+00 380 2020 8 3.05830e+01 2.00018e+00 400 2020 9 2.86328e+01 2.58180e+00 370 2020 10 2.48565e+01 1.83892e+00 374 2020 11 2.13196e+01 1.99055e+00 432 2020 12 1.47031e+01 1.04545e+00 217 2021 1 1.57589e+01 1.22318e+00 210 2021 2 1.64025e+01 2.70586e+00 187 2021 3 1.90394e+01 2.48603e+00 286 2021 4 2.15262e+01 2.47835e+00 277 2021 5 2.56129e+01 2.28860e+00 365 2021 6 2.80270e+01 2.25314e+00 332 2021 7 3.01864e+01 1.97135e+00 363 2021 8 2.99585e+01 2.37443e+00 361 2021 9 2.80453e+01 1.97218e+00 420 2021 10 2.55118e+01 2.06292e+00 442 2021 11 1.90438e+01 1.79318e+00 382 2021 12 1.79625e+01 1.66229e+00 333 2022 1 1.55034e+01 3.49297e+00 284 2022 2 1.64818e+01 2.86879e+00 194 2022 3 1.89299e+01 1.95739e+00 453 2022 4 2.18329e+01 1.94296e+00 155 2022 5 2.66742e+01 2.05789e+00 542 2022 6 2.97508e+01 2.38461e+00 600 2022 7 2.98481e+01 2.18224e+00 505 2022 8 3.04324e+01 1.94797e+00 479 2022 9 2.85048e+01 2.34885e+00 418 2022 10 2.40055e+01 2.40468e+00 411 2022 11 2.14333e+01 2.96175e+00 359 2022 12 1.90856e+01 2.47405e+00 334 2023 1 1.61718e+01 1.63235e+00 400 2023 2 1.86104e+01 2.66358e+00 337 2023 3 2.06968e+01 1.83738e+00 298 2023 4 2.30832e+01 2.06367e+00 362 2023 5 2.46690e+01 2.65362e+00 339 2023 6 2.87529e+01 2.81941e+00 428 2023 7 3.07707e+01 1.91420e+00 622 2023 8 3.07734e+01 1.44112e+00 519 2023 9 2.91273e+01 1.96225e+00 572 2023 10 2.40358e+01 2.23001e+00 559 2023 11 1.96281e+01 2.02873e+00 309 2023 12 1.47872e+01 1.84645e+00 253 2024 1 1.29215e+01 1.96152e+00 229 2024 2 1.58926e+01 2.16062e+00 297 2024 3 1.96809e+01 2.33055e+00 251 2024 4 2.11196e+01 1.28344e+00 28