Year	Percent
1990	1.44165
1991	1.43546
1992	0.71105
1993	0.70417
1994	0.70527
1995	1.09596
1996	1.09986
1997	1.10468
1998	1.11002
1999	1.1156
2000	1.1213
2001	1.12675
2002	1.1316
2003	1.13113
2004	0.72789
2005	1.08859
2006	1.08437
2007	1.0795
2008	1.07513
2009	0.92863
2010	0.92617
2011	0.39116
2012	0.38899
2013	0.38593
2014	1.18588
2015	1.17922
2016	1.17311
2017	1.03029
2018	1.12802
2019	1.05303
2020	1.06658