75% (1973)

71% (1958)

57% (1990)

78% (1948)

47% (1960)

57% (1989)

62% (1970)

70% (1946)

59% (1967)

63% (1957)

77% (1970)

60% (1950)

55% (1972)

64% (1961)

61% (1993)

62% (1982)

61% (1990)

64% (1978)

68% (1966)

47% (1976)