YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.84552e+01 4.62766e-01 24 2000 3 1.93044e+01 1.41417e+00 100 2000 4 2.18336e+01 1.35738e+00 76 2000 5 2.64054e+01 1.24614e+00 97 2000 6 2.87171e+01 1.54185e+00 98 2000 7 3.01409e+01 1.06791e+00 112 2000 8 2.88245e+01 1.42257e+00 63 2000 9 2.41379e+01 1.71655e+00 45 2000 10 2.24628e+01 1.17344e+00 80 2000 11 2.21056e+01 3.03904e+00 62 2000 12 nan nan 0 2001 1 1.18412e+01 2.30151e-02 4 2001 2 1.62059e+01 1.26687e+00 39 2001 3 1.71084e+01 1.72486e+00 40 2001 4 2.22458e+01 2.08110e+00 100 2001 5 2.48156e+01 1.65606e+00 150 2001 6 2.90888e+01 9.17572e-01 29 2001 7 2.76389e+01 1.49936e+00 66 2001 8 2.82282e+01 2.08567e+00 145 2001 9 2.70686e+01 1.35572e+00 119 2001 10 2.21242e+01 2.14949e+00 104 2001 11 2.01067e+01 1.50128e+00 142 2001 12 1.92354e+01 1.67178e+00 99 2002 1 1.66385e+01 9.99208e-01 33 2002 2 1.41630e+01 5.54220e-01 25 2002 3 1.67102e+01 4.10950e+00 47 2002 4 2.43899e+01 2.44401e+00 98 2002 5 2.56429e+01 2.23975e+00 119 2002 6 2.84707e+01 1.48282e+00 115 2002 7 2.96730e+01 1.66926e+00 479 2002 8 2.90423e+01 1.55781e+00 444 2002 9 2.83987e+01 1.57785e+00 388 2002 10 2.64468e+01 2.22332e+00 398 2002 11 1.96312e+01 2.06178e+00 147 2002 12 1.55075e+01 1.32093e+00 96 2003 1 1.39221e+01 1.40381e+00 120 2003 2 1.46928e+01 1.44193e+00 134 2003 3 2.06744e+01 1.49547e+00 154 2003 4 2.09960e+01 2.95193e+00 272 2003 5 2.55518e+01 2.04161e+00 462 2003 6 2.82953e+01 2.18107e+00 388 2003 7 2.93132e+01 1.70503e+00 404 2003 8 2.88688e+01 1.91802e+00 372 2003 9 2.76156e+01 1.45288e+00 416 2003 10 2.29362e+01 1.26910e+00 359 2003 11 2.11023e+01 1.86403e+00 402 2003 12 1.55394e+01 2.19465e-01 8 2004 1 1.39931e+01 1.37645e+00 52 2004 2 1.34600e+01 1.50389e+00 91 2004 3 1.74331e+01 2.09126e+00 307 2004 4 2.01710e+01 2.38685e+00 377 2004 5 2.59443e+01 2.25672e+00 649 2004 6 2.82300e+01 1.72288e+00 374 2004 7 2.94411e+01 1.44922e+00 471 2004 8 2.88753e+01 1.92679e+00 483 2004 9 2.68591e+01 1.93845e+00 480 2004 10 2.44292e+01 1.84682e+00 522 2004 11 2.21895e+01 2.32279e+00 172 2004 12 1.78308e+01 1.18352e+00 78 2005 1 1.47515e+01 2.07428e+00 83 2005 2 1.50482e+01 1.79526e+00 179 2005 3 1.67549e+01 2.25515e+00 229 2005 4 2.02143e+01 1.61571e+00 405 2005 5 2.42143e+01 2.70739e+00 497 2005 6 2.82481e+01 1.56149e+00 531 2005 7 2.93097e+01 1.79040e+00 666 2005 8 2.88112e+01 1.68001e+00 464 2005 9 2.79748e+01 1.56371e+00 535 2005 10 2.48735e+01 1.89977e+00 395 2005 11 2.02898e+01 2.07215e+00 218 2005 12 1.48614e+01 1.09843e+00 84 2006 1 1.53380e+01 1.61384e+00 221 2006 2 1.36887e+01 1.47361e+00 205 2006 3 1.78931e+01 1.74023e+00 278 2006 4 2.30184e+01 2.15873e+00 430 2006 5 2.54384e+01 2.40165e+00 420 2006 6 2.85148e+01 1.94548e+00 497 2006 7 2.98706e+01 2.01913e+00 501 2006 8 3.01064e+01 1.34016e+00 472 2006 9 2.75893e+01 1.95484e+00 466 2006 10 2.50468e+01 2.07464e+00 297 2006 11 1.95000e+01 2.73179e+00 147 2006 12 1.75615e+01 1.46285e+00 100 2007 1 1.38030e+01 1.39351e+00 22 2007 2 1.32573e+01 2.08904e+00 142 2007 3 1.84296e+01 2.05765e+00 393 2007 4 1.99228e+01 2.52538e+00 259 2007 5 2.43740e+01 1.60421e+00 478 2007 6 2.78693e+01 1.90953e+00 422 2007 7 2.91773e+01 1.77249e+00 379 2007 8 2.99415e+01 1.57288e+00 454 2007 9 2.81191e+01 1.35818e+00 407 2007 10 2.53247e+01 2.20572e+00 366 2007 11 1.89005e+01 1.37420e+00 242 2007 12 1.75019e+01 1.77206e+00 169 2008 1 1.56277e+01 1.70825e+00 77 2008 2 1.56770e+01 1.29428e+00 186 2008 3 1.68512e+01 2.02785e+00 266 2008 4 2.20964e+01 1.78940e+00 297 2008 5 2.49456e+01 2.18142e+00 610 2008 6 2.91628e+01 2.04949e+00 465 2008 7 2.85610e+01 1.78544e+00 441 2008 8 2.78040e+01 1.75968e+00 331 2008 9 2.67788e+01 2.13328e+00 385 2008 10 2.35069e+01 1.49900e+00 367 2008 11 1.91874e+01 1.63520e+00 155 2008 12 1.62875e+01 1.26037e+00 106 2009 1 1.58917e+01 1.38507e+00 174 2009 2 1.44513e+01 1.46370e+00 141 2009 3 1.87114e+01 2.15945e+00 335 2009 4 2.13941e+01 2.71830e+00 408 2009 5 2.56280e+01 1.95966e+00 423 2009 6 2.84687e+01 2.17312e+00 723 2009 7 2.86794e+01 1.70816e+00 524 2009 8 2.92348e+01 1.46305e+00 409 2009 9 2.79169e+01 1.39451e+00 452 2009 10 2.54091e+01 2.68042e+00 382 2009 11 1.91599e+01 2.15151e+00 182 2009 12 1.22525e+01 1.13406e+00 44 2010 1 1.44561e+01 2.35036e+00 40 2010 2 1.25156e+01 1.58062e+00 81 2010 3 1.53943e+01 1.63148e+00 131 2010 4 2.12983e+01 2.22779e+00 404 2010 5 2.65334e+01 2.33821e+00 597 2010 6 3.03259e+01 1.66346e+00 647 2010 7 2.98340e+01 1.66175e+00 627 2010 8 2.92457e+01 1.76112e+00 289 2010 9 2.95285e+01 1.72965e+00 691 2010 10 2.34642e+01 1.58062e+00 379 2010 11 1.89538e+01 1.59362e+00 336 2010 12 1.49403e+01 1.79915e+00 77 2011 1 1.14335e+01 9.49170e-01 108 2011 2 1.58996e+01 2.99310e+00 156 2011 3 1.94610e+01 2.71263e+00 339 2011 4 2.29949e+01 2.19699e+00 489 2011 5 2.54102e+01 2.45447e+00 593 2011 6 2.98484e+01 1.63125e+00 730 2011 7 2.99289e+01 1.58400e+00 528 2011 8 3.02972e+01 1.33954e+00 566 2011 9 2.68995e+01 1.31834e+00 451 2011 10 2.25831e+01 2.02041e+00 380 2011 11 1.77925e+01 8.69108e-01 173 2011 12 1.54846e+01 5.91085e-01 119 2012 1 1.45944e+01 1.19370e+00 235 2012 2 1.61603e+01 1.91432e+00 116 2012 3 2.07082e+01 3.17702e+00 419 2012 4 2.26156e+01 1.72795e+00 560 2012 5 2.66961e+01 1.89311e+00 686 2012 6 2.74632e+01 1.51735e+00 433 2012 7 2.88924e+01 1.64134e+00 429 2012 8 2.81391e+01 1.59309e+00 336 2012 9 2.71622e+01 1.70233e+00 508 2012 10 2.44087e+01 1.51192e+00 523 2012 11 1.77713e+01 1.32454e+00 238 2012 12 1.71261e+01 1.65418e+00 185 2013 1 1.64370e+01 2.21643e+00 161 2013 2 1.56716e+01 1.40404e+00 121 2013 3 1.60592e+01 1.91647e+00 303 2013 4 2.15826e+01 1.85767e+00 324 2013 5 2.42169e+01 2.90448e+00 443 2013 6 2.78642e+01 1.35290e+00 432 2013 7 2.83030e+01 1.33491e+00 200 2013 8 2.89651e+01 2.20928e+00 430 2013 9 2.89057e+01 2.00933e+00 458 2013 10 2.42781e+01 2.23099e+00 323 2013 11 1.95776e+01 2.25715e+00 188 2013 12 1.73623e+01 2.19574e+00 116 2014 1 1.16976e+01 1.04070e+00 106 2014 2 1.44658e+01 2.43119e+00 153 2014 3 1.66705e+01 2.06375e+00 272 2014 4 1.97084e+01 2.32280e+00 291 2014 5 2.54330e+01 2.53488e+00 405 2014 6 2.86915e+01 2.04648e+00 574 2014 7 2.81879e+01 1.60869e+00 545 2014 8 2.92463e+01 1.46474e+00 496 2014 9 2.91031e+01 1.73098e+00 344 2014 10 2.45801e+01 2.01582e+00 626 2014 11 1.66272e+01 2.31474e+00 128 2014 12 1.68434e+01 1.48092e+00 196 2015 1 1.38882e+01 9.61140e-01 102 2015 2 1.31213e+01 1.14298e+00 164 2015 3 1.98083e+01 2.48907e+00 300 2015 4 2.31059e+01 2.13777e+00 220 2015 5 2.64555e+01 2.44879e+00 577 2015 6 2.95498e+01 1.78223e+00 625 2015 7 2.95422e+01 1.54786e+00 429 2015 8 2.93529e+01 1.75579e+00 501 2015 9 2.72076e+01 1.50682e+00 316 2015 10 2.37029e+01 1.75157e+00 392 2015 11 2.20134e+01 2.95733e+00 230 2015 12 1.96789e+01 2.41958e+00 132 2016 1 1.44892e+01 1.21997e+00 98 2016 2 1.50165e+01 1.79144e+00 259 2016 3 1.81461e+01 2.39808e+00 294 2016 4 2.13297e+01 2.13720e+00 401 2016 5 2.50235e+01 2.12965e+00 397 2016 6 2.89368e+01 1.72106e+00 636 2016 7 3.06843e+01 1.64744e+00 698 2016 8 2.96940e+01 1.51259e+00 531 2016 9 2.89802e+01 1.46092e+00 635 2016 10 2.51245e+01 1.35488e+00 521 2016 11 2.02406e+01 2.12075e+00 237 2016 12 1.73502e+01 1.27555e+00 202 2017 1 1.64184e+01 1.93407e+00 167 2017 2 1.81542e+01 1.61288e+00 318 2017 3 1.89068e+01 2.78463e+00 407 2017 4 2.26777e+01 2.43273e+00 403 2017 5 2.51948e+01 2.08009e+00 341 2017 6 2.78836e+01 2.03077e+00 290 2017 7 2.99041e+01 2.08700e+00 567 2017 8 2.98084e+01 2.05837e+00 341 2017 9 2.72002e+01 1.89129e+00 518 2017 10 2.48268e+01 2.48099e+00 534 2017 11 2.07567e+01 1.95500e+00 284 2017 12 1.74203e+01 2.32755e+00 98 2018 1 1.25974e+01 7.57217e-01 46 2018 2 2.05515e+01 2.67851e+00 362 2018 3 1.85132e+01 2.10001e+00 343 2018 4 2.10886e+01 1.20354e+00 332 2018 5 2.60252e+01 2.19043e+00 385 2018 6 2.91362e+01 2.28434e+00 535 2018 7 2.98898e+01 1.21048e+00 461 2018 8 2.91500e+01 2.04051e+00 432 2018 9 2.93304e+01 1.75025e+00 583 2018 10 2.68012e+01 2.69995e+00 580 2018 11 2.07731e+01 1.93670e+00 146 2018 12 1.52043e+01 1.76964e+00 145 2019 1 1.48229e+01 2.43859e+00 218 2019 2 1.76526e+01 2.46066e+00 156 2019 3 1.83012e+01 1.49192e+00 238 2019 4 2.12331e+01 1.83786e+00 324 2019 5 2.79073e+01 2.33378e+00 595 2019 6 2.93368e+01 1.84752e+00 435 2019 7 3.00187e+01 1.43241e+00 523 2019 8 2.99450e+01 1.54377e+00 413 2019 9 2.95383e+01 1.76687e+00 790 2019 10 2.74623e+01 2.64681e+00 456 2019 11 1.91793e+01 1.70979e+00 248 2019 12 1.67698e+01 1.89899e+00 161 2020 1 1.64217e+01 1.89852e+00 271 2020 2 1.57363e+01 1.43786e+00 298 2020 3 2.15813e+01 3.62352e+00 366 2020 4 2.32178e+01 1.26018e+00 268 2020 5 2.47196e+01 1.97542e+00 590 2020 6 2.85213e+01 1.92140e+00 406 2020 7 2.92898e+01 1.16486e+00 438 2020 8 3.06932e+01 1.62105e+00 400 2020 9 2.87851e+01 2.81527e+00 387 2020 10 2.46919e+01 1.55208e+00 554 2020 11 2.09917e+01 1.71318e+00 484 2020 12 1.55615e+01 1.47008e+00 229 2021 1 1.56799e+01 1.30333e+00 230 2021 2 1.57225e+01 2.65026e+00 193 2021 3 1.93308e+01 2.24922e+00 328 2021 4 2.13671e+01 2.28432e+00 436 2021 5 2.51171e+01 1.87503e+00 437 2021 6 2.77887e+01 1.59340e+00 344 2021 7 3.02307e+01 1.96473e+00 414 2021 8 3.02113e+01 1.80160e+00 489 2021 9 2.79910e+01 2.26338e+00 472 2021 10 2.54821e+01 1.95173e+00 330 2021 11 1.86761e+01 1.70263e+00 423 2021 12 1.77372e+01 1.43405e+00 326 2022 1 1.40367e+01 2.01756e+00 277 2022 2 1.69266e+01 2.83526e+00 261 2022 3 1.91276e+01 1.70229e+00 498 2022 4 2.29121e+01 2.04490e+00 352 2022 5 2.67544e+01 1.46493e+00 527 2022 6 2.99815e+01 1.77855e+00 503 2022 7 2.97638e+01 1.65135e+00 490 2022 8 3.03691e+01 1.55743e+00 507 2022 9 2.81499e+01 1.91311e+00 530 2022 10 2.30915e+01 1.92278e+00 514 2022 11 2.05469e+01 2.94137e+00 383 2022 12 1.81766e+01 2.43243e+00 319 2023 1 1.60648e+01 1.61180e+00 375 2023 2 1.78878e+01 2.36829e+00 293 2023 3 1.99471e+01 2.80824e+00 324 2023 4 2.31893e+01 1.54680e+00 465 2023 5 2.49547e+01 2.28476e+00 410 2023 6 2.85899e+01 1.89182e+00 454 2023 7 3.05286e+01 1.69928e+00 562 2023 8 3.10114e+01 1.28585e+00 741 2023 9 2.91456e+01 1.47857e+00 589 2023 10 2.37646e+01 1.79772e+00 608 2023 11 1.92682e+01 1.88894e+00 330 2023 12 1.44399e+01 1.46776e+00 261 2024 1 1.32591e+01 1.53657e+00 257 2024 2 1.55491e+01 1.79124e+00 341 2024 3 1.98878e+01 1.44038e+00 243 2024 4 2.16817e+01 1.06829e+00 48