73% (2008)

70% (1976)

64% (1996)

45% (1975)

67% (2011)

0% (1975)

77% (2010)

67% (1977)

50% (1994)

57% (1985)

0% (1979)

50% (1986)

62% (1990)

64% (1980)

0% (1978)

69% (1988)

0% (1979)

40% (1962)

45% (2008)

60% (1976)