Year	Years
1980	5.607
1981	4.666
1982	2.687
1983	2.59
1984	2.749
1985	3.537
1986	-0.7546
1987	-0.00712
1988	-0.8784
1989	-0.7947
1990	-1.066
1991	-0.3741
1992	0.468
1993	2.582
1994	2.958
1995	1.605
1996	1.513
1997	1.211
1998	2.115
1999	3.137
2000	2.974
2001	2.636
2002	2.294
2003	0.05162