Year	Percent
1996	1.19
1997	1.53
1998	1.58
1999	1.63
2000	1.48
2001	1.41
2002	1.37
2003	1.61
2004	1.83
2005	1.22
2006	0.94
2007	0.7
2008	0.74
2009	0.72
2010	0.63
2011	0.37
2012	0.38
2013	0.28
2014	0.36
2015	0.33
2016	0.18