Year	Percent
1996	1.0271
1997	1.09732
1998	0.94463
1999	0.95509
2000	0.62642
2001	0.57932
2002	0.59088
2003	1.0455
2004	1.25327
2005	1.39436
2006	1.24075
2007	1.11723
2008	0.89947
2009	1.07923
2010	1.48347
2011	1.36361
2012	1.25858
2013	1.36405
2014	1.52946
2015	1.462
2016	1.54487
2017	1.41361