Year	Percent
2000	1.14
2001	1.18
2002	1.17
2003	1.42
2004	1.42
2005	0.92
2006	0.79
2007	0.74
2008	0.58
2009	0.57
2010	0.68
2011	0.78
2012	0.55
2013	0.43
2014	0.4
2015	0.42
2016	0.42
2017	0.53