62% (2001)

77% (2004)

74% (1998)

66% (2008)

69% (1992)

68% (1999)

64% (1998)

68% (2010)

63% (2009)

67% (2010)

70% (2006)

68% (2001)

40% (2006)

66% (1992)

57% (2003)

60% (1999)

53% (1998)

68% (2004)

57% (2004)

59% (2006)