40% (2002)

37% (1976)

62% (1994)

57% (1978)

63% (1988)

60% (1994)

51% (1981)

70% (1972)

52% (1990)

67% (1975)

30% (1985)

50% (1979)

67% (1979)

66% (1990)

60% (2004)

82% (1982)

61% (2001)

32% (1983)

20% (1994)

60% (1973)