Year	Percent
2000	12.43086
2001	16.25664
2002	19.20675
2003	17.74429
2004	13.95847
2006	10.09945
2007	10.77884
2008	12.99782
2009	14.13307
2010	12.341
2011	14.91926
2012	17.34547
2013	16.12714
2014	15.98669
2015	16.33027
2016	16.40405