Year	Percent
2000	1.27095
2001	0.759
2003	1.05145
2004	0.62919
2005	0.46642
2006	0.4388
2007	0.32274
2008	0.27317
2009	0.40124
2010	0.39288
2011	0.29718
2012	0.26805
2013	0.24828
2014	0.22608
2015	0.29529
2016	0.51703
2017	0.44766