63% (2001)

74% (1998)

77% (2004)

62% (2009)

68% (2010)

68% (1999)

65% (2008)

70% (2006)

70% (1992)

68% (2004)

67% (2010)

57% (2008)

67% (2002)

69% (2006)

61% (2004)

72% (2005)

60% (1996)

67% (2001)

62% (1999)

70% (2001)