60% (1962)

60% (2002)

60% (2002)

81% (1990)

78% (1998)

0% (1984)

81% (1984)

66% (1993)

75% (2004)

64% (1990)

0% (1987)

67% (1984)

80% (1997)

73% (1993)

64% (1995)

69% (1992)

79% (1981)

70% (2000)

72% (2005)

65% (2005)