Year	Percent
2000	12.65711
2001	14.70722
2002	16.05666
2003	16.5849
2004	17.20666
2005	16.48779
2006	18.1699
2007	19.51182
2008	18.73907
2009	17.34652
2010	18.52559
2011	17.88094
2012	18.47289
2013	17.23874
2014	16.54203