71% (1976)

44% (1977)

56% (2009)

64% (2001)

74% (2014)

47% (1980)

0% (2005)

50% (1987)

48% (1979)

75% (1996)

65% (1987)

70% (1984)

56% (2006)

62% (1994)

60% (1986)

50% (1965)