47% (1984)

50% (2012)

60% (2013)

69% (1949)

60% (2002)

62% (1993)

69% (2000)

66% (2013)

73% (2018)

80% (2017)

65% (2014)

77% (2012)

58% (1985)

44% (2013)

61% (1967)

65% (2014)

45% (2012)

67% (2013)

61% (2000)

50% (2010)