Men-Women	Year
1.7	1998
1.8	1997
2.3	1996
2.4	1995
2.2	1994
2.0	1993
2.1	1992
2.2	1991
2.2	1990
2.4	1989
2.3	1988
2.2	1987
2.6	1986
2.2	1985
2.4	1984
2.6	1983
2.7	1982
2.5	1981
2.7	1980
2.3	1979
2.4	1978
2.4	1977
2.5	1976
2.4	1975