60% (1962)

82% (1984)

78% (1998)

62% (2002)

67% (1993)

68% (2002)

60% (1957)

79% (1981)

70% (1992)

72% (1993)

60% (2002)

62% (2005)

69% (2003)

78% (1987)

72% (2005)

0% (1984)

90% (1999)

75% (2004)

70% (1989)

0% (1987)