74% (2002)

73% (2015)

62% (2000)

67% (2000)

65% (2010)

62% (2003)

62% (1998)

62% (2009)

75% (2006)

56% (2011)

61% (2001)

65% (2000)

77% (2005)

74% (2011)

68% (2007)

63% (1998)

62% (2003)

74% (2004)

62% (2011)

70% (2008)