74% (2005)

58% (1985)

56% (1992)

65% (1982)

64% (1982)

67% (1995)

67% (1988)

64% (1982)

65% (1990)

61% (1983)

35% (1985)

50% (1995)

71% (1995)

50% (1981)

50% (1987)

70% (1979)

0% (1978)

72% (1986)

64% (1987)

49% (1990)