Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            57        6         17.093193  17.129677  17.112193  0.014182   17.111322 
2008            57        6         17.97871   18.025     18.002844  0.01773    18.001017 
2009            57        6         16.228968  16.254257  16.242801  0.008624   16.243807 
2010            57        6         18.966581  18.985388  18.977468  0.006616   18.978145 
2011            57        6         18.328194  18.350193  18.340688  0.008387   18.342016 
2012            57        6         18.826355  18.834484  18.830785  0.003325   18.830726 
2013            57        6         19.168839  19.198774  19.184102  0.011084   19.182983 
2014            57        6         16.693871  16.743904  16.724387  0.017199   16.727549 
2015            57        6         17.674807  17.707548  17.691677  0.013453   17.691339 
2016            57        6         18.172356  18.211161  18.191602  0.016958   18.190951 
2017            57        6         17.270678  17.285484  17.278323  0.006041   17.27821  
2018            57        6         18.597193  18.637871  18.619371  0.01455    18.620065 
2019            57        6         19.297258  19.318356  19.308866  0.007315   19.310855 
2020            57        6         19.335161  19.357452  19.347075  0.008372   19.346354 
2021            57        6         17.945194  17.975225  17.961161  0.010602   17.959984 
2022            57        6         17.691065  17.730742  17.711134  0.016389   17.711226 
2023            57        6         20.273258  20.292032  20.283554  0.006648   20.282919