Year	Percent
1992	0.40678
1993	0.41084
1994	0.50151
1995	0.95462
1996	1.04831
1997	0.69371
1998	0.75222
1999	0.83778
2000	0.77579
2001	0.91057
2002	0.77596
2003	0.73556
2004	0.45397
2005	0.45685
2006	1.51534
2007	1.49442
2008	0.43443
2009	0.51952
2010	0.43397
2011	0.51771
2012	0.51062
2013	0.51998
2014	0.5275
2015	0.52579
2016	0.52879
2017	0.60021
2018	0.68983
2019	0.60675
2020	0.91039