Year	Percent
2002	1.34256
2003	1.29584
2004	0.87602
2005	0.56836
2006	0.77841
2007	0.81254
2008	0.75653
2009	1.29548
2010	0.66998
2011	0.71498
2012	0.5226
2013	0.62117
2014	0.7372
2015	0.81315
2016	0.66593
2017	0.52337