Year	Percent
2002	1.26999
2003	1.10151
2004	0.90837
2005	0.66157
2006	0.78155
2007	1.10244
2008	0.95411
2009	1.23544
2010	0.84821
2011	0.98243
2012	0.67527
2013	0.81573
2014	1.00592
2015	0.85178
2016	0.79889
2017	0.54567