Year	Percent
1992	1.6225
1993	2.79097
1994	3.62161
1995	1.69946
1996	1.26069
1997	1.76897
1998	1.4951
1999	1.36676
2000	1.34699
2001	1.43829
2002	1.40024
2003	1.29906
2004	1.35822
2005	1.49845
2006	1.70941
2007	1.64977
2008	1.45349
2009	1.37258
2010	1.39023
2011	1.26606
2012	1.28439
2013	1.32851
2014	1.32822
2015	1.32517
2016	1.27256
2017	1.19199