Year	Percent
1976	6.65
1977	7.15
1978	5.51
1981	5.28
1982	4.63
1986	8.35
1992	6.67
1993	9.09
1995	2.94
1996	2.7
1997	8.33
1998	8.11
1999	2.63
2002	6.12
2003	4
2004	1.92
2005	3.57
2006	6.25
2007	6.35
2008	3.23