64% (2007)

60% (2002)

56% (2001)

67% (1994)

56% (1996)

76% (1973)

55% (2002)

66% (1956)

73% (1987)

63% (2020)

67% (2018)

66% (2018)

66% (2012)

70% (2012)

66% (2001)

71% (2009)

61% (2010)

70% (1991)

73% (2009)

69% (1980)