59% (1989)

57% (1980)

46% (1982)

62% (1985)

52% (1976)

38% (2005)

62% (1973)

65% (1968)

10% (1997)

54% (1988)

47% (1986)

58% (1987)

57% (1989)

55% (1977)

46% (1986)

56% (1975)

95% (1996)

48% (1988)

54% (1986)

55% (1988)