71% (1979)

71% (1994)

78% (1969)

73% (1980)

67% (1982)

77% (1979)

63% (1981)

65% (1995)

0% (1994)

62% (1977)

70% (1982)

66% (1994)

67% (1978)

61% (1984)

71% (1996)

72% (1977)

63% (1980)

65% (2000)

54% (1980)

54% (1995)