Year	Percent
1994	1.93
1995	1.95
1996	2.17
1997	1.65
1998	1.57
1999	1.62
2000	1.63
2001	1.53
2002	1.56
2003	1.28
2004	0.52
2005	0.98
2006	0.99
2007	1.94
2008	2.02
2009	1.86
2010	1.93
2011	1.87
2012	1.81
2013	1.73
2014	1.98
2015	1.5
2016	1.39
2017	1.28