83% (2003)

67% (2006)

70% (2004)

60% (2005)

58% (2007)

66% (2006)

73% (2005)

62% (2005)

57% (2003)

58% (2006)

61% (2003)

54% (2004)

77% (2009)

62% (2005)

70% (2008)

50% (2005)