70% (2001)

70% (1975)

40% (1987)

66% (1989)

58% (2009)

56% (1987)

39% (1994)

61% (1972)

50% (1994)

55% (1981)

60% (1978)

66% (1978)

58% (1980)

40% (1985)

50% (1992)

70% (1991)

80% (1994)

61% (1978)

53% (1993)

52% (1989)