Year	Percent
1994	12.288
1995	11.489
1996	4.833
1997	5.785
1998	5.9833
1999	6.1658
2000	8.0464
2001	10.0299
2002	14.665
2003	9.6751
2004	15.4946
2005	13.9988
2006	9.5074
2007	9.0175
2008	8.4689
2009	9.921
2010	11.0271
2011	9.0561
2012	11.5618
2013	11.6404
2014	11.6981
2015	10.6208
2016	9.6692
2017	6.436