20% (2004)

0% (1961)

0% (1955)

75% (1974)

72% (2006)

20% (1984)

50% (1977)

83% (1973)

80% (1989)

0% (1961)

43% (1977)

67% (1974)

76% (2002)

0% (1961)

35% (1984)

64% (1976)

64% (1969)

50% (2007)

0% (2015)

38% (1971)