73% (1971)

78% (1988)

70% (1976)

0% (1957)

0% (1956)

75% (1995)

69% (1992)

70% (1987)

56% (2002)

83% (1977)

72% (2007)

50% (2012)

69% (1983)

75% (1987)

78% (1993)

59% (2009)

65% (2002)

73% (1969)

86% (1990)

59% (2024)