Year	Percent
1999	92.90739
2000	93.96897
2001	99.00932
2002	96.46338
2003	97.89601
2004	92.74931
2005	89.40213
2006	89.91286
2007	88.77699
2008	89.44266
2009	89.02731
2010	97.1095
2011	104.15303
2012	108.39762
2013	109.1918
2014	102.51397
2015	101.26055