Year	Percent
1973	1.03129
1974	1.02834
1975	1.06936
1976	1.07162
1977	1.05191
1979	1.05289
1980	1.07032
1981	1.0661
1983	1.0541
1984	1.05045
1985	1.04792
1986	1.06185
1987	1.0213
1988	1.03328
1989	1.0473
1991	1.03448
1993	1.00902
1999	1.00736
2000	1.009
2001	1.00503
2002	1.01264
2003	1.01676
2004	1.02076