62% (2007)

69% (2004)

68% (2013)

61% (2013)

72% (2011)

71% (2012)

59% (2004)

48% (2009)

45% (2002)

61% (1997)

70% (2009)

55% (2006)

67% (1995)

62% (2008)

64% (2014)

84% (2000)

52% (2003)

66% (2011)

48% (2002)

80% (1968)