66% (1999)

55% (1977)

54% (1970)

44% (1982)

50% (1983)

40% (1971)

81% (1987)

61% (1954)

50% (1991)

42% (1990)

58% (1981)

50% (1952)

55% (1967)

67% (1993)

50% (1950)

75% (1967)

65% (1967)

58% (1988)

35% (1985)

63% (1967)