Year	Percent
1990	1.05125
1991	1.85654
1992	1.83295
1993	1.73626
1994	2.06795
1995	2.87074
1996	2.66617
1997	2.5117
1998	2.41995
1999	2.32641
2000	2.23127
2001	2.15643
2002	2.22153
2003	2.12154
2004	1.92603
2005	2.00523
2006	1.89169
2007	1.78012
2008	1.67428
2009	1.54608
2010	1.45195
2011	1.33722
2012	1.21539
2013	1.11383
2014	1.06997
2015	1.01392
2016	0.97231
2017	1.05451
2018	0.98204
2019	0.97358
2020	1.03676