80% (2009)

76% (2003)

72% (2007)

75% (2010)

52% (2007)

71% (2003)

60% (2001)

68% (2000)

67% (2004)

66% (2004)

61% (2003)

62% (1999)

66% (2013)

70% (2005)

70% (1997)

61% (2000)

66% (2000)

68% (2000)

66% (1999)

64% (2004)