51% (1956)

42% (1985)

86% (1976)

67% (2004)

72% (2012)

75% (1960)

77% (2004)

80% (2008)

72% (2010)

77% (1957)

74% (2016)

60% (2001)

54% (1992)

59% (1952)

38% (2005)

78% (2015)

84% (1987)

66% (1996)

57% (2009)

83% (2002)