Year	Percent
1990	2.083
1991	0
1992	0
1993	0
1994	0
2004	1.9878
2005	0.6072
2006	1.6501
2007	1.1336
2008	1.7806
2009	1.9733
2010	1.6398
2011	1.7217
2012	1.7424
2013	1.5707
2014	2.1644
2015	2.2197
2016	2.2705
2017	2.3856
