Year	Years
1980	5.388
1981	-0.317
1982	1.095
1983	2.779
1984	2.045
1985	0.6877
1986	-0.7268
1987	0.9393
1988	-0.893
1989	-2.939
1990	-2.841
1991	-7.524
1992	-5.932
1993	-5.18
1994	-4.494
1995	-5.561
1996	-2.815
1997	-7.823
1998	-3.377
1999	-0.2611
2000	-0.3721
2001	10.26
2002	7.079
2003	-2.909