73% (2008)

67% (2011)

45% (1975)

0% (1975)

70% (1976)

64% (1996)

77% (2010)

57% (1985)

69% (1988)

50% (1994)

67% (1977)

50% (1986)

0% (1978)

55% (1974)

50% (1983)

50% (1986)

80% (1982)

50% (1998)

0% (1981)

62% (1990)