48% (1981)

70% (1980)

58% (1972)

57% (1983)

56% (1985)

58% (1996)

50% (1976)

65% (1987)

58% (1983)

50% (1981)

48% (1970)

59% (1974)

53% (1975)

66% (1984)

48% (1969)

58% (1971)

45% (1988)

0% (1987)

50% (2007)

0% (1985)