48% (2004)

56% (2007)

47% (2007)

44% (2008)

59% (2012)

35% (2009)

54% (2011)

57% (2006)

54% (2007)

49% (2007)

41% (2007)

46% (2006)

0% (2000)

38% (2007)

10% (1999)

0% (1995)