Year	Percent
1994	53.5188
1995	52.22067
1996	51.51044
1997	54.80079
1998	54.4422
1999	53.30586
2000	58.29933
2001	59.99201
2002	66.36481
2003	62.77722
2004	61.52638
2005	61.3912
2006	64.12904
2007	64.86614
2008	62.36008
2009	61.05638
2010	60.898
2011	62.68561
2012	63.57785
2013	63.41135
2014	64.13697
2015	64.04482
2016	63.35908