Year	scale 0 - 100
2004	56.36363636363637
2005	54.77272727272727
2006	54.31818181818182
2007	55
2008	55.68181818181818
2009	57.5
2010	58.18181818181818
2011	57.04545454545455
2012	57.72727272727273
2013	56.52173913043478
2014	56.73913043478261
2015	56.38297872340426
2016	57.234042553191486
2017	56.808510638297875
2018	52.97872340425532
2019	55.744680851063826
2020	52.12765957446808