76% (1969)

73% (1964)

62% (2007)

65% (1969)

69% (1999)

77% (1986)

67% (1997)

74% (1977)

20% (1991)

65% (2016)

64% (1965)

0% (1968)

67% (1986)

70% (1966)

64% (1989)

37% (1956)

69% (1985)

70% (1968)

66% (2012)

56% (2004)