Year	Percent
2005	1.25778
2006	0.89418
2007	0.59964
2008	0.54292
2009	0.5978
2011	0.40795
2012	0.41097
2013	0.60061
2014	0.51603
2015	0.5557
2016	0.85244
2017	0.70552