36% (2002)

47% (1992)

46% (1995)

44% (1992)

52% (1994)

28% (1997)

40% (1996)

48% (1990)

48% (1989)

46% (1992)

42% (1990)

62% (1992)

45% (1996)

50% (1990)

53% (1993)

37% (1989)

47% (1991)

43% (1995)

32% (1990)

50% (1996)