Year	Number
1996	0.428986370563507
1998	0.437017410993576
2000	0.460498780012131
2002	0.52853125333786
2003	0.545891940593719
2004	0.5696901679039
2005	0.594892740249634
2006	0.577117204666138
2007	0.69093531370163
2008	0.57797634601593
2009	0.560471177101135
2010	0.531482577323914
2011	0.450080156326294
2012	0.400915592908859
2013	0.337270796298981
2014	0.366481721401215
2015	0.432587623596191
2016	0.402202278375626
2017	0.429834395647049
2018	0.365130007266998
2019	0.354615122079849
2020	0.259695321321487
2021	0.284617066383362
2022	0.285204857587814