Year	Percent
2003	73.08538
2004	73.03585
2005	69.575
2006	72.90622
2007	74.11942
2008	72.19494
2009	77.92645
2010	77.69401
2011	75.06331
2012	75.47703
2013	75.57622
2014	75.40509
2015	73.51445
2016	70.7327