70% (1980)

57% (1983)

58% (1971)

59% (1972)

56% (1985)

65% (1987)

58% (1983)

48% (1969)

50% (1976)

48% (1981)

50% (1981)

48% (1970)

58% (1996)

66% (1984)

50% (2007)

45% (1988)

0% (1981)

59% (1974)

0% (1985)

0% (1987)