Year	Percent
1984	11.43
1990	5.42
1991	4.24
1992	3.83
1993	2.8
1994	2.99
1995	4
1998	3.04
2000	6.25
2001	6.71
2003	6.85
2004	5.6409
2005	4.9945
2006	4.5491
2007	3.8876
2008	3.0492
2009	2.9495
2010	2.7039
2011	2.2297
2012	1.7774
2013	2.2246
2014	2.244
2015	2.8328
2016	3.1735
2017	2.5802