62% (2003)

59% (2004)

62% (2001)

50% (2006)

60% (2003)

72% (2001)

74% (2003)

70% (2004)

59% (2006)

66% (1998)

65% (2002)

62% (2006)

59% (2001)

65% (2003)

54% (2008)

64% (2001)

65% (2004)

67% (2007)

62% (2002)

47% (2002)