67% (1976)

67% (2013)

59% (2017)

61% (2005)

78% (1993)

64% (1986)

68% (1992)

65% (2007)

73% (2021)

60% (2017)

65% (2021)

52% (2014)

61% (2010)

59% (2020)

33% (1987)

55% (2009)

78% (1957)

68% (2007)

72% (1987)

65% (1999)