YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.93985e+01 1.53525e-01 17 2000 3 1.90807e+01 7.44045e-01 65 2000 4 2.17620e+01 1.16272e+00 41 2000 5 2.58254e+01 8.50404e-01 77 2000 6 2.81871e+01 1.09678e+00 41 2000 7 3.00193e+01 1.27449e+00 84 2000 8 2.93967e+01 1.57721e+00 38 2000 9 2.80774e+01 1.89391e+00 40 2000 10 2.39406e+01 1.71574e+00 45 2000 11 2.33720e+01 1.03700e+00 23 2000 12 1.64984e+01 1.40353e-01 16 2001 1 1.31450e+01 5.13566e-02 4 2001 2 1.64059e+01 1.91951e+00 28 2001 3 1.61586e+01 1.57341e+00 40 2001 4 2.18567e+01 3.46914e+00 41 2001 5 2.47560e+01 2.17424e+00 84 2001 6 2.72727e+01 9.60786e-01 32 2001 7 2.77397e+01 1.65549e+00 82 2001 8 2.71744e+01 9.91745e-01 86 2001 9 2.70442e+01 1.21463e+00 61 2001 10 2.16221e+01 1.56093e+00 45 2001 11 2.09414e+01 1.43882e+00 39 2001 12 1.82711e+01 1.01522e+00 38 2002 1 nan nan 0 2002 2 1.54840e+01 1.44213e-01 15 2002 3 1.49634e+01 1.39482e+00 25 2002 4 2.16863e+01 2.52471e+00 43 2002 5 2.56373e+01 2.51584e+00 98 2002 6 2.81050e+01 1.64531e+00 68 2002 7 2.86581e+01 1.57770e+00 239 2002 8 2.79202e+01 1.27543e+00 297 2002 9 2.71670e+01 1.82295e+00 208 2002 10 2.49726e+01 2.06601e+00 160 2002 11 1.94787e+01 2.06288e+00 74 2002 12 1.55221e+01 9.84844e-01 17 2003 1 1.37270e+01 9.55719e-01 28 2003 2 1.36821e+01 1.06433e+00 80 2003 3 1.92280e+01 2.50779e+00 198 2003 4 2.11266e+01 2.69919e+00 239 2003 5 2.37712e+01 2.06308e+00 278 2003 6 2.60006e+01 1.25267e+00 292 2003 7 2.69118e+01 1.41691e+00 235 2003 8 2.75355e+01 1.63897e+00 223 2003 9 2.64989e+01 1.54737e+00 225 2003 10 2.22849e+01 1.17273e+00 117 2003 11 2.09961e+01 1.88138e+00 250 2003 12 nan nan 0 2004 1 1.35133e+01 7.87653e-01 43 2004 2 1.38131e+01 1.32413e+00 21 2004 3 1.79519e+01 1.95056e+00 217 2004 4 1.99722e+01 2.32191e+00 189 2004 5 2.53048e+01 2.37088e+00 372 2004 6 2.66795e+01 1.73517e+00 293 2004 7 2.85591e+01 1.55224e+00 372 2004 8 2.71873e+01 1.78894e+00 218 2004 9 2.62669e+01 1.95520e+00 341 2004 10 2.40878e+01 1.85965e+00 217 2004 11 2.08974e+01 2.41909e+00 125 2004 12 1.67295e+01 1.47693e+00 50 2005 1 1.48604e+01 2.24896e+00 71 2005 2 1.56282e+01 1.83526e+00 65 2005 3 1.60955e+01 1.95713e+00 142 2005 4 1.89378e+01 1.96833e+00 242 2005 5 2.40505e+01 2.51368e+00 324 2005 6 2.64470e+01 1.59614e+00 361 2005 7 2.78348e+01 1.58063e+00 349 2005 8 2.76653e+01 1.49765e+00 357 2005 9 2.70294e+01 1.47641e+00 399 2005 10 2.47768e+01 1.66084e+00 254 2005 11 1.92284e+01 1.86674e+00 76 2005 12 1.66002e+01 1.13862e+00 30 2006 1 1.47908e+01 1.59795e+00 119 2006 2 1.42162e+01 9.77034e-01 55 2006 3 1.74369e+01 1.53263e+00 259 2006 4 2.29949e+01 2.19681e+00 183 2006 5 2.48541e+01 2.24288e+00 289 2006 6 2.79043e+01 1.65619e+00 322 2006 7 2.86070e+01 1.89966e+00 347 2006 8 2.88609e+01 1.24318e+00 342 2006 9 2.72374e+01 2.06105e+00 239 2006 10 2.46622e+01 1.82883e+00 218 2006 11 1.80079e+01 9.73566e-01 70 2006 12 1.63162e+01 2.10795e+00 8 2007 1 1.39727e+01 1.57442e+00 28 2007 2 1.48275e+01 1.33617e+00 83 2007 3 1.79414e+01 2.53373e+00 230 2007 4 1.98808e+01 1.86303e+00 176 2007 5 2.43346e+01 1.55362e+00 315 2007 6 2.72371e+01 1.83754e+00 289 2007 7 2.90998e+01 1.35571e+00 163 2007 8 2.96437e+01 1.61017e+00 349 2007 9 2.69368e+01 1.45337e+00 300 2007 10 2.49277e+01 1.64560e+00 258 2007 11 1.90331e+01 1.52313e+00 124 2007 12 1.88303e+01 9.06823e-01 95 2008 1 1.46090e+01 1.11205e+00 26 2008 2 1.59407e+01 1.60503e+00 99 2008 3 1.63991e+01 1.81563e+00 149 2008 4 1.99514e+01 2.41976e+00 236 2008 5 2.44587e+01 2.06479e+00 314 2008 6 2.81336e+01 1.57175e+00 321 2008 7 2.82390e+01 1.64337e+00 361 2008 8 2.79808e+01 1.44994e+00 219 2008 9 2.63572e+01 1.76294e+00 265 2008 10 2.30657e+01 1.30477e+00 148 2008 11 1.99474e+01 1.41319e+00 76 2008 12 1.58631e+01 1.70757e+00 24 2009 1 1.64718e+01 1.81860e+00 60 2009 2 1.40964e+01 1.41267e+00 98 2009 3 1.79021e+01 1.36514e+00 213 2009 4 2.01790e+01 2.62035e+00 288 2009 5 2.41160e+01 1.80996e+00 295 2009 6 2.85376e+01 1.98259e+00 358 2009 7 2.86112e+01 1.31814e+00 358 2009 8 2.76874e+01 9.55913e-01 290 2009 9 2.73914e+01 1.50652e+00 190 2009 10 2.51096e+01 2.29562e+00 157 2009 11 1.82645e+01 1.06943e+00 37 2009 12 1.55830e+01 2.03761e+00 10 2010 1 1.34681e+01 8.52886e-01 45 2010 2 1.14368e+01 1.35268e+00 37 2010 3 1.55983e+01 1.31780e+00 79 2010 4 2.08836e+01 1.82859e+00 252 2010 5 2.60427e+01 2.45330e+00 244 2010 6 2.91412e+01 1.92386e+00 463 2010 7 2.90865e+01 1.72552e+00 412 2010 8 2.86446e+01 1.63750e+00 242 2010 9 2.78180e+01 1.77453e+00 373 2010 10 2.30055e+01 1.45489e+00 250 2010 11 1.96348e+01 2.21312e+00 159 2010 12 1.35267e+01 1.56507e+00 35 2011 1 1.30389e+01 8.02825e-01 50 2011 2 1.82946e+01 1.20823e+00 61 2011 3 1.85875e+01 2.85646e+00 252 2011 4 2.19543e+01 2.28500e+00 182 2011 5 2.45650e+01 2.17794e+00 367 2011 6 2.85704e+01 1.48606e+00 374 2011 7 2.86802e+01 1.40860e+00 330 2011 8 2.99540e+01 1.47559e+00 437 2011 9 2.57464e+01 1.61574e+00 229 2011 10 2.27341e+01 1.42524e+00 166 2011 11 1.86286e+01 1.54494e+00 109 2011 12 1.51733e+01 6.43152e-01 24 2012 1 1.64232e+01 2.60604e+00 140 2012 2 1.43607e+01 1.22663e+00 37 2012 3 1.96866e+01 2.59514e+00 230 2012 4 2.20620e+01 1.52200e+00 280 2012 5 2.61285e+01 2.13732e+00 397 2012 6 2.65990e+01 1.79610e+00 325 2012 7 2.83810e+01 1.59788e+00 249 2012 8 2.80293e+01 1.72214e+00 273 2012 9 2.67218e+01 1.91621e+00 310 2012 10 2.35280e+01 1.53681e+00 270 2012 11 1.89760e+01 1.43748e+00 101 2012 12 1.65593e+01 1.45213e+00 129 2013 1 1.55819e+01 1.83983e+00 114 2013 2 1.51878e+01 6.69348e-01 65 2013 3 1.55317e+01 1.96336e+00 203 2013 4 2.02238e+01 2.27478e+00 202 2013 5 2.39205e+01 2.80906e+00 230 2013 6 2.71718e+01 1.31865e+00 392 2013 7 2.68649e+01 1.00942e+00 240 2013 8 2.72334e+01 1.55993e+00 334 2013 9 2.76731e+01 1.36902e+00 348 2013 10 2.44254e+01 1.99465e+00 170 2013 11 1.92322e+01 1.88521e+00 67 2013 12 1.80178e+01 1.27943e+00 36 2014 1 1.25495e+01 6.27861e-01 37 2014 2 1.34822e+01 1.11682e+00 76 2014 3 1.58847e+01 7.37164e-01 126 2014 4 1.94299e+01 2.86580e+00 218 2014 5 2.39730e+01 2.37751e+00 237 2014 6 2.73063e+01 2.05384e+00 315 2014 7 2.77421e+01 1.63151e+00 353 2014 8 2.89116e+01 1.25121e+00 375 2014 9 2.76724e+01 1.84524e+00 304 2014 10 2.42770e+01 1.89971e+00 292 2014 11 1.65848e+01 2.25680e+00 26 2014 12 1.64039e+01 1.11268e+00 64 2015 1 1.33748e+01 1.19941e+00 28 2015 2 1.36392e+01 1.05339e+00 93 2015 3 1.97227e+01 2.40231e+00 108 2015 4 2.17048e+01 1.43445e+00 194 2015 5 2.50288e+01 2.41083e+00 265 2015 6 2.84898e+01 1.73835e+00 333 2015 7 2.89830e+01 1.65771e+00 335 2015 8 2.89141e+01 1.38223e+00 415 2015 9 2.73267e+01 2.20407e+00 233 2015 10 2.31904e+01 1.67667e+00 179 2015 11 2.24742e+01 1.90540e+00 107 2015 12 1.86624e+01 2.00921e+00 72 2016 1 1.29376e+01 5.39395e-01 49 2016 2 1.41572e+01 1.80376e+00 166 2016 3 1.72905e+01 1.66743e+00 141 2016 4 2.10903e+01 2.18714e+00 283 2016 5 2.45005e+01 1.98419e+00 240 2016 6 2.81314e+01 1.81001e+00 389 2016 7 2.93465e+01 1.52721e+00 386 2016 8 2.81691e+01 1.68602e+00 274 2016 9 2.75772e+01 1.32147e+00 383 2016 10 2.45939e+01 1.51141e+00 348 2016 11 2.15061e+01 2.13449e+00 110 2016 12 1.72952e+01 7.16199e-01 88 2017 1 1.57176e+01 2.45751e+00 103 2017 2 1.78997e+01 1.67692e+00 145 2017 3 1.74987e+01 2.44550e+00 264 2017 4 2.22164e+01 2.07074e+00 321 2017 5 2.40090e+01 2.29835e+00 217 2017 6 2.49922e+01 1.56127e+00 107 2017 7 2.80792e+01 1.62827e+00 432 2017 8 2.80046e+01 1.11253e+00 300 2017 9 2.65560e+01 1.50663e+00 278 2017 10 2.45082e+01 1.70872e+00 246 2017 11 1.95769e+01 1.46682e+00 107 2017 12 1.86909e+01 1.34784e+00 27 2018 1 1.24571e+01 3.21665e-02 7 2018 2 1.93612e+01 2.95555e+00 149 2018 3 1.68693e+01 1.37202e+00 200 2018 4 1.99856e+01 1.73322e+00 278 2018 5 2.55219e+01 2.13499e+00 383 2018 6 2.77824e+01 1.36956e+00 363 2018 7 2.84191e+01 1.53659e+00 299 2018 8 2.82693e+01 1.53876e+00 401 2018 9 2.78848e+01 1.36499e+00 370 2018 10 2.57262e+01 1.95961e+00 381 2018 11 2.02691e+01 2.00286e+00 34 2018 12 1.60286e+01 1.04737e+00 28 2019 1 1.45704e+01 9.53502e-01 51 2019 2 1.70347e+01 1.75129e+00 60 2019 3 1.73008e+01 1.90896e+00 140 2019 4 2.00162e+01 2.14291e+00 238 2019 5 2.50966e+01 2.98690e+00 391 2019 6 2.76116e+01 1.92138e+00 314 2019 7 2.86987e+01 1.66293e+00 355 2019 8 2.83784e+01 1.38218e+00 274 2019 9 2.88054e+01 1.90187e+00 374 2019 10 2.72678e+01 2.52007e+00 253 2019 11 1.84803e+01 8.83573e-01 52 2019 12 1.74432e+01 1.56577e+00 30 2020 1 1.59738e+01 2.20134e+00 151 2020 2 1.52344e+01 1.00092e+00 103 2020 3 2.05123e+01 3.54703e+00 97 2020 4 2.29783e+01 1.93913e+00 105 2020 5 2.44659e+01 2.70758e+00 267 2020 6 2.79953e+01 1.36582e+00 170 2020 7 2.88468e+01 1.47844e+00 331 2020 8 2.96817e+01 1.33907e+00 276 2020 9 2.87168e+01 2.16715e+00 183 2020 10 2.39085e+01 1.57864e+00 309 2020 11 2.08855e+01 1.70130e+00 192 2020 12 1.53248e+01 7.58645e-01 25 2021 1 1.56041e+01 1.47275e+00 92 2021 2 1.44908e+01 1.97641e+00 60 2021 3 1.80049e+01 2.57733e+00 155 2021 4 2.04043e+01 2.12550e+00 205 2021 5 2.36588e+01 1.86400e+00 212 2021 6 2.65071e+01 1.35190e+00 328 2021 7 2.76691e+01 1.29787e+00 197 2021 8 2.84719e+01 1.39688e+00 219 2021 9 2.67681e+01 1.69466e+00 248 2021 10 2.39773e+01 1.85363e+00 169 2021 11 1.89917e+01 1.42470e+00 139 2021 12 1.72988e+01 9.90172e-01 91 2022 1 1.41216e+01 2.36264e+00 86 2022 2 1.57483e+01 2.06666e+00 105 2022 3 1.80748e+01 1.80644e+00 250 2022 4 2.21209e+01 2.05077e+00 185 2022 5 2.58821e+01 2.07125e+00 383 2022 6 2.82339e+01 2.00354e+00 310 2022 7 2.81106e+01 1.46422e+00 283 2022 8 2.82385e+01 1.83760e+00 365 2022 9 2.84836e+01 2.21238e+00 418 2022 10 2.30638e+01 2.53685e+00 360 2022 11 2.16528e+01 2.63012e+00 315 2022 12 1.75224e+01 2.86200e+00 259 2023 1 1.67306e+01 2.46338e+00 346 2023 2 1.72722e+01 2.80928e+00 247 2023 3 1.96050e+01 2.37259e+00 256 2023 4 2.22187e+01 2.08120e+00 266 2023 5 2.58115e+01 2.41445e+00 458 2023 6 2.87828e+01 2.91582e+00 404 2023 7 3.04531e+01 2.26527e+00 553 2023 8 3.15511e+01 1.75568e+00 745 2023 9 2.93171e+01 1.91182e+00 521 2023 10 2.39395e+01 2.51418e+00 502 2023 11 1.94234e+01 2.01490e+00 312 2023 12 1.45339e+01 1.48937e+00 249 2024 1 1.30754e+01 2.00922e+00 237 2024 2 1.58033e+01 2.19006e+00 390 2024 3 1.86055e+01 1.80230e+00 206 2024 4 2.23128e+01 1.39007e+00 34