Year	Percent
1986	1.457
1987	5.127
1988	4.969
1989	1.879
1990	3.087
1998	0.0002
1999	0.1429
2000	0.6684
2001	0.3885
2002	0.3712
2003	0.1942
2004	0.322
2005	0.2041
2006	0.05078
2007	0.04271