Year	Number
1996	0.613030731678009
1998	0.575733542442322
2000	0.595203697681427
2002	0.518141508102417
2003	0.349641561508179
2004	0.364736646413803
2005	0.384340941905975
2006	0.376439899206162
2007	0.348420560359955
2008	0.350017130374908
2009	0.341262251138687
2010	0.352399289608002
2011	0.360775291919708
2012	0.317384898662567
2013	0.347427368164063
2014	0.29147407412529
2015	0.275287687778473
2016	0.286816298961639
2017	0.309247493743896
2018	0.289012312889099
2019	0.280839860439301
2020	0.27869239449501
2021	0.282457619905472
2022	0.277728617191315