Year	Years
1980	2.765
1981	3.408
1982	3.448
1983	1.172
1984	-0.02859
1985	0.9668
1986	-0.5183
1987	-1.22
1988	-2.419
1989	-2.892
1990	-1.784
1991	-1.61
1992	0.3431
1993	2.026
1994	1.638
1995	2.322
1996	2.76
1997	2.212
1998	2.636
1999	1.174
2000	-0.8344
2001	-2.16
2002	-3.843
2003	-3.836