69% (2006)

64% (2004)

67% (2008)

74% (2000)

72% (2015)

69% (2006)

64% (1993)

60% (1999)

62% (1999)

65% (2004)

71% (1998)

63% (2000)

67% (1999)

73% (1999)

65% (2005)

62% (2009)

75% (2001)

65% (2009)

72% (2006)

69% (2004)