75% (2014)

61% (1978)

72% (2016)

80% (2008)

78% (2003)

76% (1979)

69% (2006)

75% (1976)

80% (1992)

72% (1985)

69% (1968)

69% (1986)

78% (1995)

74% (1973)

66% (1971)

63% (1988)

80% (2004)

75% (1971)

70% (2012)

75% (1993)