73% (2008)

63% (1996)

60% (1976)

67% (2011)

69% (1988)

67% (1977)

45% (1975)

77% (2010)

40% (1962)

80% (1982)

45% (2008)

50% (1974)

55% (1941)

64% (1980)

50% (1986)

50% (1998)

50% (1986)

50% (1997)

50% (1994)

50% (1993)