Year	Percent
2003	49.50091
2004	48.79421
2005	58.64727
2006	51.89074
2007	58.76479
2008	70.39409
2009	55.02625
2010	76.41639
2011	92.55001
2012	63.46641
2013	58.54744
2014	48.68963
2015	45.98218
2016	45.93776