Year	Percent
2000	20.08197
2001	17.58377
2002	17.76747
2003	18.98976
2004	20.28891
2005	22.94
2006	23.51044
2007	25.09416
2008	24.84008
2009	24.2764
2010	24.59573
2011	23.0578
2012	23.02803
2013	22.37755
2014	22.09424