Year	Percent
1990	1.27965
1991	1.23334
1992	1.27604
1993	1.25502
1994	1.11071
1995	1.71273
1996	1.58742
1997	1.44413
1998	1.40231
1999	1.36844
2000	1.3692
2001	1.3348
2002	1.26063
2003	1.10105
2004	1.08
2005	1.10063
2006	1.09509
2007	1.08729
2008	1.08216
2009	1.07055
2010	1.06096
2011	1.04891
2012	1.03018
2013	1.00555
2014	0.9794
2015	0.9531
2016	0.92721
2017	0.90656
2018	0.88385
2019	0.86255
2020	0.84878