Year	Percent
1990	2.12227
1991	2.08737
1992	1.99259
1993	1.92016
1994	1.91141
1995	1.8877
1996	1.82387
1997	1.75595
1998	1.66919
1999	1.50229
2000	1.41176
2001	1.35135
2002	1.29034
2003	1.25923
2004	1.244
2005	1.23721
2006	1.21261
2007	1.19836
2008	1.18972
2009	1.14284
2010	1.13903
2011	1.10635
2012	1.07501
2013	1.04625
2014	1.02707
2015	1.0046
2016	1.00334
2017	1.00499
2018	0.99311
2019	0.99177
2020	1.00069