77% (1986)

65% (1996)

64% (1967)

57% (1967)

65% (1966)

65% (1951)

73% (1966)

56% (1988)

57% (1969)

73% (1953)

58% (1964)

54% (1960)

50% (1995)

50% (1972)

100% (1990)

71% (1955)

65% (1989)

63% (1981)

65% (1966)

52% (1992)