83% (2003)

70% (2004)

67% (2006)

72% (2005)

61% (2005)

58% (2006)

57% (2003)

59% (2007)

77% (2009)

62% (2005)

66% (2006)

64% (2005)

50% (2005)

54% (2004)

60% (2003)

70% (2008)