52% (2012)

49% (1992)

52% (1981)

65% (1992)

58% (1996)

70% (2009)

61% (1993)

57% (1998)

62% (2015)

67% (1986)

63% (2016)

57% (2014)

67% (1977)

61% (2000)

60% (2023)

66% (2018)

47% (2005)

80% (2014)

59% (1961)

69% (1969)