48% (1987)

56% (1984)

65% (1986)

63% (1986)

52% (1987)

55% (1990)

56% (1984)

60% (1988)

70% (1982)

37% (1988)

64% (1982)

56% (1991)

48% (1987)

30% (1991)

65% (2005)

54% (1988)