Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            3568      3463      2.091323   3.853935   2.663637   0.327037   2.590581  
2008            3568      3463      3.874613   5.058452   4.212233   0.240236   4.142161  
2009            3568      3463      2.782484   3.848742   3.106895   0.234528   3.041258  
2010            3568      3463      3.712839   4.90058    4.175488   0.266338   4.137387  
2011            3568      3463      2.881677   4.090903   3.295069   0.214832   3.239742  
2012            3568      3463      6.582065   7.473774   6.789526   0.195158   6.700581  
2013            3568      3463      3.026742   4.145871   3.461455   0.254355   3.39071   
2014            3568      3463      1.115613   3.04729    1.705629   0.451074   1.565871  
2015            3568      3463      0.511935   2.011      0.972718   0.313582   0.904355  
2016            3568      3463      4.964774   5.990484   5.231154   0.206191   5.164032  
2017            3568      3463      2.966484   4.459613   3.593531   0.279996   3.56371   
2018            3568      3463      3.210548   4.180677   3.547141   0.224828   3.46329   
2019            3568      3463      2.797387   4.440452   3.246857   0.377187   3.118226  
2020            3568      3463      5.567613   6.679193   5.800688   0.208284   5.709064  
2021            3568      3463      3.445613   4.914548   3.77171    0.274345   3.676839  
2022            3568      3463      4.075807   5.387032   4.466694   0.262727   4.407806  
2023            3568      3463      4.859032   5.654452   5.149957   0.207219   5.076161