75% (1980)

60% (1979)

76% (1980)

70% (1977)

75% (1976)

70% (1979)

64% (2007)

80% (1988)

72% (1974)

82% (1980)

70% (1973)

78% (1987)

85% (1986)

0% (2010)

70% (2012)

56% (2011)

0% (1975)

74% (1975)

76% (1978)

65% (2016)