Year	Percent
1993	2.10218
1994	1.74965
1995	1.78085
1996	1.46277
1997	1.30827
1998	1.25423
1999	1.15057
2000	1.23031
2001	1.15773
2002	1.07602
2003	1.22464
2004	0.52829
2005	0.54143
2006	0.50078
2007	0.52038
2008	0.51805
2009	0.50499
2010	0.54433
2011	0.51218
2012	0.50912
2013	0.45447
2014	0.46792
2015	0.4718
2016	0.43329
2017	0.42703
2018	0.41004
2019	0.46113
2020	0.5023