77% (1964)

73% (1952)

70% (2003)

74% (1968)

54% (2010)

71% (1999)

70% (1995)

55% (1973)

80% (1960)

57% (1988)

80% (1992)

80% (2000)

63% (1999)

68% (1975)

56% (1972)

63% (1972)

0% (1966)

49% (1972)

67% (2004)

0% (1971)