71% (1993)

64% (1992)

63% (2005)

72% (2014)

72% (1986)

66% (2009)

63% (2016)

69% (1984)

46% (2015)

63% (1988)

52% (2007)

63% (1973)

69% (1991)

61% (1993)

66% (1972)

63% (2003)

65% (1993)

52% (2004)

74% (1999)

67% (1992)