67% (1981)

51% (1990)

63% (1981)

71% (1979)

72% (1982)

77% (1979)

63% (1980)

53% (1979)

50% (1984)

62% (1990)

78% (1980)

44% (1981)

76% (1980)

64% (1975)

65% (1981)

64% (1990)

60% (2004)

68% (1991)

53% (1981)

0% (1984)