39% (2001)

40% (2003)

61% (1985)

63% (1988)

60% (2012)

40% (1987)

63% (1982)

77% (2002)

56% (1981)

62% (1998)

54% (2010)

77% (2005)

65% (1980)

90% (1969)

64% (2011)

75% (1971)

66% (1993)

0% (1974)

60% (1977)

60% (1987)