75% (1980)

80% (1988)

70% (1977)

56% (2011)

60% (1979)

90% (1978)

0% (1992)

76% (1980)

60% (2008)

61% (2001)

75% (1976)

70% (2012)

73% (1993)

50% (2005)

84% (1969)

0% (1992)

0% (2014)

68% (1968)

0% (1969)

78% (1987)