65% (1995)

77% (1969)

71% (1979)

67% (1982)

72% (1980)

76% (1979)

71% (1979)

69% (1982)

60% (1984)

62% (1980)

67% (1978)

63% (1981)

69% (1976)

70% (1996)

71% (1994)

66% (1994)

71% (1977)

61% (1977)

76% (1980)

68% (1977)