Year	Percent
2000	1.34601
2001	1.1769
2002	1.26435
2003	1.23494
2004	1.3686
2005	1.92447
2006	1.71951
2007	1.84729
2008	2.26432
2009	1.75375
2010	1.63488
2011	1.34827
2012	1.11068
2013	1.09504
2014	1.03797
2015	1.25744
2016	0.72794
2017	0.65953