61% (2015)

61% (2015)

75% (1999)

71% (2000)

70% (2004)

64% (2010)

77% (1997)

72% (2003)

77% (2006)

50% (2003)

70% (2010)

60% (2005)

74% (2001)

76% (2002)

49% (2003)

61% (2000)

62% (2004)

68% (2004)

67% (2006)

59% (2009)