Year	Percent
2000	0.99
2001	1.39
2002	0.91
2003	1.12
2004	0.75
2005	0.72
2006	0.59
2007	0.45
2008	0.41
2009	1.03
2010	1.17
2011	0.5
2012	0.55
2014	1.01
2015	0.81
2016	1.06
2017	0.65
2018	0.48
2020	0.53