70% (1976)

70% (2000)

66% (1968)

63% (1987)

53% (1959)

67% (1970)

79% (1985)

72% (2019)

66% (1967)

71% (2005)

67% (1958)

70% (1966)

56% (1970)

76% (1966)

76% (1973)

66% (2001)

74% (2001)

68% (2002)

55% (2002)

61% (1985)