66% (1981)

67% (2009)

67% (1997)

67% (2015)

61% (2021)

55% (2017)

63% (2009)

62% (2012)

61% (2007)

65% (2007)

60% (1994)

64% (1996)

63% (1992)

75% (1931)

58% (2016)

73% (1991)

80% (1978)

73% (1992)

65% (2006)

64% (2018)