Year	Percent
1992	1.76999
1993	1.56594
1994	1.45045
1995	2.16508
1996	1.96473
1997	1.92287
1998	1.91681
1999	1.83461
2000	1.8124
2001	1.82009
2002	1.80731
2003	1.76562
2004	1.19475
2005	1.21174
2006	0.9613
2007	0.95745
2008	0.96181
2009	0.96567
2010	0.97027
2011	0.97495
2012	0.97922
2013	0.55645
2014	0.94136
2015	1.18721
2016	1.36111
2017	1.39143
2018	1.39803
2019	1.47057
2020	1.44759