Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            57        6         14.171678  14.190774  14.180473  0.007273   14.180178 
2008            57        6         12.748322  12.787807  12.770597  0.01357    12.771871 
2009            57        6         12.134516  12.164613  12.150812  0.010895   12.14979  
2010            57        6         12.662226  12.691903  12.674317  0.010103   12.673387 
2011            57        6         14.419903  14.454613  14.439817  0.012084   14.443662 
2012            57        6         13.426129  13.437033  13.429812  0.003979   13.428919 
2013            57        6         13.875871  13.892871  13.883817  0.006635   13.883516 
2014            57        6         13.492193  13.506678  13.499511  0.005903   13.499435 
2015            57        6         12.758549  12.802161  12.782247  0.015123   12.782209 
2016            57        6         14.220258  14.246097  14.232581  0.010269   14.232274 
2017            57        6         14.549645  14.560967  14.555936  0.004021   14.557113 
2018            57        6         13.611774  13.660226  13.637215  0.017791   13.635468 
2019            57        6         13.590258  13.621097  13.607043  0.010629   13.60729  
2020            57        6         12.937419  13.002935  12.970591  0.028609   12.969887 
2021            57        6         15.445323  15.459517  15.452952  0.005023   15.452725 
2022            57        6         13.795548  13.81558   13.803306  0.006896   13.802226 
2023            57        6         14.885775  14.907258  14.896425  0.008487   14.896258