Year	%
1994	25.7
1997	22.6
2000	33.3
2001	39.8
2003	39.7
2004	48.7
2006	47.7
2007	51.7
2010	52.8
2011	54.6
2013	58.7
2014	63.9
2018	81.9
2019	75.2