49% (2004)

56% (2007)

47% (2007)

44% (2008)

38% (2007)

54% (2011)

35% (2009)

59% (2012)

45% (2006)

49% (2007)

41% (2007)

0% (2000)

46% (2006)

50% (2007)

40% (1999)

0% (1995)