78% (1969)

71% (1979)

0% (1994)

63% (1981)

67% (1982)

71% (1994)

64% (1980)

64% (1995)

72% (1980)

70% (1982)

66% (1994)

67% (1978)

64% (2000)

77% (1979)

63% (1977)

54% (1980)

61% (1984)

41% (1990)

70% (1996)

69% (1976)