Year	Number
1996	0.616059839725494
1998	0.563318967819214
2000	0.586516797542572
2002	0.643847048282623
2003	0.556768476963043
2004	0.364736646413803
2005	0.384340941905975
2006	0.376439899206162
2007	0.348420560359955
2008	0.350017130374908
2009	0.323601871728897
2010	0.320087254047394
2011	0.360775291919708
2012	0.317384898662567
2013	0.347427368164063
2014	0.261565506458282
2015	0.275287687778473
2016	0.253411799669266
2017	0.263454109430313
2018	0.24618773162365
2019	0.252529382705688
2020	0.247384041547775
2021	0.251843899488449
2022	0.260167717933655