69% (2002)

65% (2008)

61% (2008)

56% (1992)

52% (2003)

46% (1991)

63% (1999)

62% (1993)

65% (2002)

60% (1984)

30% (1986)

66% (1994)

100% (2009)

72% (1999)

57% (2007)

0% (1999)

79% (1990)

100% (2006)

0% (1992)

76% (1989)