Year	Percent
1995	6.63
1996	6.7
1997	6.02
1998	6.02
1999	6.15
2000	5.66
2001	5.11
2002	4.76
2003	4.83
2004	5.03
2005	4.51
2006	4.98
2007	4.94
2008	4.56
2009	4.42
2010	4.34
2011	4.16
2012	4.73
2013	4.66
2014	4.52
2015	4.46
2016	4.38