Year	Percent
1989	1
1990	1
1991	1.2
1992	1.3
1993	1.2
1994	1
1995	1
1996	0.9
1997	1.2
1998	0.5
1999	0.5
2001	0.8
2002	0.8
2003	0.7
2004	0.7
2005	0.5
2006	0.6
2007	0.9
2008	0.9
2009	1.1
2010	1.1
2011	0.8
2012	0.9
2013	1.1
2014	1.3
2015	1.3
2016	1