57% (2002)

66% (1989)

49% (1996)

72% (2006)

41% (2000)

58% (1999)

49% (2010)

58% (2008)

45% (2006)

42% (2005)

52% (2007)

30% (2003)

42% (2004)

53% (2002)

44% (2001)

30% (2008)

30% (2003)

69% (2001)

37% (2013)

30% (2004)