50% (1994)

66% (1994)

49% (2007)

58% (2004)

49% (2001)

74% (2006)

51% (2008)

60% (1997)

55% (2003)

36% (1992)

74% (2002)

73% (1999)

48% (2005)

70% (2000)

81% (2000)

63% (2010)

80% (1994)

37% (2007)

69% (2003)

65% (2004)