71% (1994)

71% (1979)

72% (1980)

0% (1994)

65% (1995)

77% (1969)

67% (1982)

77% (1979)

60% (1984)

65% (2000)

68% (1976)

63% (1981)

66% (1994)

69% (1982)

76% (1980)

64% (1980)

71% (1977)

62% (1977)

72% (1979)

64% (2006)