53% (1998)

59% (2009)

65% (2006)

66% (2007)

59% (2009)

53% (2007)

40% (2004)

52% (2009)

49% (2007)

46% (2004)

70% (2004)

20% (2008)

56% (2005)

66% (2004)

49% (2005)

40% (2001)

45% (2003)

40% (2006)

27% (2000)

60% (2003)