46% (1988)

51% (1984)

53% (1988)

62% (1983)

60% (1987)

40% (1988)

42% (1987)

47% (1991)

60% (1982)

63% (1987)

15% (1988)

47% (1986)

55% (1987)

43% (1987)

70% (1986)

47% (1982)

37% (1987)

47% (1982)

60% (1980)

54% (1987)