60% (2008)

57% (1976)

80% (1984)

76% (1976)

0% (2004)

0% (2010)

70% (1973)

60% (1968)

63% (1986)

60% (1978)

0% (1982)

0% (2010)

0% (2011)

84% (1969)

63% (1988)

0% (2001)

0% (1985)

77% (1978)

0% (1970)

80% (1980)