Year	Percent
1995	9.59
2001	9.14
2002	8.2
2003	5.9
2004	8.34
2005	9.52
2006	9.04
2007	8.48
2008	7.17
2009	7.26
2010	7.65
2011	7.45
2012	7.47
2013	7.32
2014	7.47
2015	7.41
2016	6.81
2017	6.75
2018	6.43
2019	6.33