71% (1980)

50% (2005)

73% (1976)

60% (1977)

70% (1979)

60% (1988)

0% (1999)

84% (1986)

0% (1975)

72% (1974)

56% (2011)

90% (1978)

72% (1975)

70% (2012)

60% (1979)

78% (1987)

64% (2007)

76% (1980)

72% (1987)

75% (1975)