58% (1979)

55% (1986)

35% (1987)

50% (1965)

76% (2013)

72% (1956)

71% (1990)

72% (1967)

77% (1978)

70% (1986)

60% (1992)

83% (2012)

68% (2004)

72% (1991)

50% (1966)

50% (2010)

53% (1993)

70% (2003)

46% (1979)

53% (1955)