42% (1994)

49% (1982)

70% (1981)

72% (1970)

65% (1983)

45% (1982)

75% (1974)

58% (1973)

70% (1977)

47% (1991)

42% (1987)

72% (1980)

57% (1984)

58% (1967)

60% (1983)

53% (1994)

58% (1974)

50% (1976)

66% (1973)

58% (1987)