Year	Percent
1999	0.14
2000	0.3773
2001	1.1517
2002	1.1941
2003	2.433
2004	1.595
2005	1.298
2006	1.0106
2007	1.1256
2008	0.5923
2009	0.5201
2010	1.5182
2011	0.655
2012	0.5059
2013	0.6162
2014	0.2339
2015	0.4075
2016	0.2126
2017	0.3041