Year	Number
1996	0.736145615577698
1998	0.674378454685211
2000	0.796699821949005
2002	0.758520305156708
2003	0.75319230556488
2004	0.683035671710968
2005	0.637201309204102
2006	0.637410521507263
2007	0.608309805393219
2008	0.575985312461853
2009	0.539696216583252
2010	0.434222996234894
2011	0.402175754308701
2012	0.349973142147064
2013	0.402441680431366
2014	0.665051102638245
2015	0.735848963260651
2016	0.774367690086365
2017	0.776520073413849
2018	0.782676994800568
2019	0.786163687705994
2020	0.780662477016449
2021	0.74746960401535
2022	0.976826727390289