Year	Percent
1982	28.28965
1986	28.69661
2001	53.56789
2002	56.67036
2003	56.31778
2004	53.48189
2005	52.83469
2007	50.06932
2008	55.37835
2009	72.46327
2010	54.59684
2011	52.26749
2012	53.5013
2013	53.56543
2014	57.28003
2016	53.49248