Year	Percent
2002	1.01296
2003	1.03545
2004	1.03353
2005	1.02885
2007	1.04399
2008	1.03873
2009	1.04416
2011	1.02593
2012	1.03564
2013	1.02958
2014	1.02914
2015	1.01794