Year	Percent
1984	0.7783
1987	0.3074
1988	0.1451
1989	0.1773
1990	0.09486
1991	0.2463
1992	0.1242
1993	0.07934
1994	0.01785
1995	4.599
1996	2.72
1997	1.848
1998	0.4324
1999	0.9747
2000	7.317
2001	6.591
2002	3.53
2003	2.172
2004	10.66
2005	2.772
2006	3.115
2007	3.924