71% (1973)

70% (1975)

61% (1989)

57% (2021)

62% (1990)

70% (2004)

78% (1959)

68% (2019)

71% (2001)

56% (2020)

71% (2018)

67% (2019)

56% (2014)

55% (2012)

63% (2013)

79% (1975)

73% (2005)

77% (1967)

65% (2001)

69% (2005)