67% (2006)

74% (1981)

55% (2010)

70% (2010)

60% (1961)

59% (1963)

62% (2010)

92% (1968)

50% (1987)

55% (1976)

69% (1969)

63% (1968)

80% (1962)

55% (1962)

70% (1967)

60% (1968)

51% (1975)

60% (1992)

58% (1988)

60% (1966)