Year	Percent
1995	7.61
2001	7.9537
2002	6.4806
2003	4.0156
2004	5.6779
2005	5.7689
2006	5.4155
2007	5.2056
2008	4.0444
2009	4.3293
2010	4.4755
2011	4.9111
2012	4.9301
2013	4.9286
2014	5.3552
2015	5.2833
2016	4.5179
2017	4.6406