70% (1983)

49% (2001)

63% (1989)

65% (1973)

71% (1969)

73% (1965)

64% (1962)

57% (1994)

67% (1969)

71% (1962)

47% (1981)

44% (1987)

49% (1982)

30% (1973)

41% (1986)

0% (1959)

80% (1983)

42% (2004)

58% (1971)

50% (1975)