53% (2007)

40% (2001)

59% (2009)

53% (1998)

58% (2009)

66% (2007)

49% (2007)

65% (2006)

49% (2005)

66% (2004)

40% (2004)

72% (2004)

45% (2003)

46% (2004)

52% (2009)

56% (2005)

0% (2008)

20% (2006)

63% (2000)

20% (2008)