Year	Number
1996	0.869897186756134
1998	0.883366405963898
2000	0.861537575721741
2002	0.85021036863327
2003	0.854120075702667
2004	0.759357511997223
2005	0.743590176105499
2006	0.689822673797607
2007	0.705601811408997
2008	0.791117250919342
2009	0.808343410491943
2010	0.77107173204422
2011	0.768938183784485
2012	0.695708990097046
2013	0.692934036254883
2014	0.690833389759064
2015	0.60696679353714
2016	0.624489009380341
2017	0.637029588222504
2018	0.53607851266861
2019	0.521641075611115
2020	0.557267367839813
2021	0.547496855258942
2022	0.539313197135925