64% (1995)

69% (1982)

70% (1996)

70% (1979)

63% (1980)

72% (1980)

66% (1982)

77% (1979)

77% (1969)

60% (1984)

71% (1994)

68% (1978)

70% (1977)

0% (1994)

72% (1979)

54% (1980)

69% (1976)

63% (1981)

67% (1994)

76% (1980)