77% (1964)

80% (1960)

55% (1973)

74% (1968)

71% (1999)

73% (1952)

73% (1959)

63% (1999)

0% (1968)

70% (1995)

0% (1980)

0% (1956)

57% (1974)

80% (2000)

48% (1972)

70% (2003)

50% (1965)

62% (1997)

0% (1977)

54% (2010)