Year	Percent
1993	1.06262
1994	0.83873
1995	1.03242
1996	1.20199
1997	1.11294
1998	1.14974
1999	0.81961
2000	0.78465
2001	0.99982
2002	0.99834
2003	1.02993
2004	0.98824
2005	1.03632
2006	0.979
2007	1.29688
2008	1.15467
2009	1.10303
2010	1.01442
2011	0.95931
2012	1.06996
2013	1.10021
2014	1.06763
2015	1.14119
2016	0.97598
2017	0.84122