Year	Years
1970	0.9397
1971	0.8213
1972	5.814
1973	3.028
1974	0.6806
1975	-0.2438
1976	1.657
1977	1.092
1978	0.9978
1979	2.562
1980	1.68
1981	2.518
1982	1.114
1983	1.776
1984	3.051
1985	3.186
1986	2.833
1987	3.33
1988	2.306
1989	0.5496
1990	0.973
1991	1.206
1992	0.8472
1993	0.2876
1994	-0.4355
1995	-0.2456
1996	-0.4079
1997	-0.8345
1998	-0.1165
1999	0.05871
2000	0.3242
2001	0.3357
2002	0.1876
2003	0.9883