65% (1986)

54% (2004)

56% (1988)

48% (1984)

10% (1993)

20% (1985)

64% (2002)

51% (1992)

48% (2011)

45% (1990)

35% (1971)

58% (1971)

45% (1998)

20% (1994)

20% (1987)

29% (1984)

39% (2004)

69% (1998)

39% (1998)

62% (1997)