62% (2001)

78% (2004)

68% (1999)

66% (2008)

74% (1998)

69% (1992)

68% (2010)

67% (2010)

70% (2006)

68% (2001)

59% (2006)

53% (1998)

66% (1992)

40% (2006)

68% (2004)

63% (2009)

64% (1998)

61% (1996)

57% (2003)

57% (2004)