53% (1998)

59% (2009)

53% (2007)

65% (2006)

58% (2009)

30% (2001)

66% (2007)

40% (2006)

20% (2008)

48% (2007)

40% (2004)

60% (2003)

52% (2009)

70% (2007)

20% (2006)

0% (2008)

48% (2005)

66% (2004)

63% (2000)

20% (2009)