Year	Years
1980	2.455
1981	2.353
1982	1.979
1983	1.173
1984	1.133
1985	1.237
1986	0.1115
1987	-0.1211
1988	-0.9162
1989	-0.5659
1990	-1.107
1991	-1.05
1992	-0.5091
1993	0.07167
1994	0.8268
1995	1.134
1996	1.897
1997	1.665
1998	1.58
1999	0.799
2000	0.2229
2001	0.2045
2002	-0.1094
2003	-0.481