77% (1964)

74% (1968)

80% (1960)

67% (1970)

80% (2000)

60% (1973)

70% (2003)

71% (1952)

71% (1999)

49% (1979)

0% (2008)

60% (1969)

63% (1972)

80% (1992)

83% (1977)

56% (1972)

50% (1965)

70% (1995)

80% (1953)

0% (2004)