70% (1992)

60% (1987)

75% (1992)

58% (1982)

66% (1999)

60% (1971)

77% (1969)

55% (1969)

40% (1978)

67% (1979)

76% (2003)

0% (1970)

63% (1996)

45% (1969)

72% (1979)

79% (1985)

60% (1974)

0% (1977)

60% (2002)

0% (1991)