Year	Percent
1993	0.42
1994	0.65
1995	0.83
1996	0.78
1997	0.64
1998	0.81
1999	0.98
2000	0.99
2001	1.16
2002	1.18
2003	1.26
2004	1.1
2005	1.25
2006	1.27
2007	1.07
2008	1.03
2009	0.98
2010	1.05
2011	0.97
2012	1
2013	1.59
2014	1.07
2015	1.05
2016	0.93
2017	0.84