69% (1998)

50% (2006)

60% (2003)

19% (2007)

70% (1992)

60% (2003)

68% (2002)

55% (2006)

71% (2007)

63% (2004)

52% (1997)

27% (2004)

74% (2004)

70% (1999)

64% (2005)

60% (2000)

62% (2005)

47% (2002)

32% (2006)

65% (1995)