49% (2001)

47% (1981)

0% (1959)

60% (1974)

63% (1989)

59% (1994)

0% (1948)

70% (1983)

64% (1962)

41% (1986)

54% (1983)

49% (1982)

10% (1952)

65% (1973)

71% (1965)

58% (1971)

50% (1975)

71% (1969)

80% (1983)

70% (1962)