80% (1993)

82% (1978)

71% (1996)

73% (1987)

95% (2004)

44% (1991)

60% (1983)

58% (1955)

81% (1994)

74% (1994)

50% (1959)

65% (1997)

74% (1984)

67% (2001)

65% (1993)

57% (1972)

64% (1966)

64% (1987)

69% (1989)

50% (1987)