Year	Percent
1992	2.42149
1993	2.61849
1994	2.16334
1995	1.71754
1996	1.44075
1997	1.16629
1998	0.89807
1999	1.00181
2000	0.83896
2001	0.80012
2002	0.7295
2003	1.2582
2004	1.36578
2005	1.02561
2006	0.66766
2007	0.56056
2008	0.38906
2009	1.00538
2010	1.96137
2011	1.86094
2012	1.80752
2013	1.43439
2014	1.40045
2015	1.38952
2016	1.22336
2017	1.21762