Year	Percent
2000	10.92778
2001	12.00697
2002	10.08238
2003	10.00672
2004	10.54721
2005	10.10737
2006	11.28517
2008	11.53315
2009	12.37701
2010	13.66952
2012	10.76916
2013	10.52917
2014	9.60849
2015	9.15594