Year	Number
1996	0.618176877498627
1998	0.633012652397156
2000	0.537079811096191
2002	0.554997205734253
2003	0.526866555213928
2004	0.50290322303772
2005	0.497263669967651
2006	0.38971409201622
2007	0.354344755411148
2008	0.453689336776733
2009	0.578809499740601
2010	0.535760879516602
2011	0.443259000778198
2012	0.528911471366882
2013	0.563845574855804
2014	0.583418786525726
2015	0.492776274681091
2016	0.431207209825516
2017	0.42804217338562
2018	0.467701107263565
2019	0.52943754196167
2020	0.498481661081314
2021	0.424208134412766
2022	0.436577290296555