Year	Number
1996	0.703103303909302
1998	0.673875689506531
2000	0.687808454036713
2002	0.708452701568604
2003	0.724850833415985
2004	0.72966194152832
2005	0.738931596279144
2006	0.624208450317383
2007	0.693163931369781
2008	0.678534626960754
2009	0.677096426486969
2010	0.693299531936646
2011	0.646594107151031
2012	0.65330559015274
2013	0.652431309223175
2015	0.498630166053772
2016	0.51005220413208
2017	0.480442553758621
2018	0.480384886264801
2019	0.491095125675201
2020	0.52329158782959
2021	0.495514720678329
2022	0.458686977624893