Year	Percent
1984	5.27
1985	6.96
1986	2.84
1989	0.86
1991	2.1
1996	2.19
2000	3.32
2003	4.85
2005	7.03
2006	6.44
2009	7.4
2010	4.3583
2013	7.414
2016	7.29
2017	6.6809