Union representation of employed wage and salary workers by sex, annual averages, 1983-2004 Women Men 1983 18.0 27.7 1984 16.8 25.7 1985 15.9 24.4 1986 15.5 23.7 1987 14.9 22.9 1988 15.0 22.5 1989 14.9 21.8 1990 14.9 21.2 1991 14.8 21.1 1992 14.9 20.4 1993 15.0 20.0 1994 15.1 19.6 1995 14.3 18.8 1996 13.8 18.4 1997 13.4 17.7 1998 13.1 17.4 1999 13.0 17.4 2000 13.1 16.5 2001 13.1 16.3 2002 13.0 16.0 2003 12.9 15.6 2004 12.5 15.0