45% (1999)

72% (1990)

41% (2003)

56% (1985)

61% (1999)

45% (1998)

63% (2002)

65% (1997)

74% (1999)

51% (1996)

72% (2002)

58% (1987)

65% (2003)

71% (2006)

76% (1987)

0% (1996)

72% (1987)

64% (2000)

90% (2008)

59% (1994)