83% (2003)

70% (2006)

79% (2003)

72% (2008)

78% (2004)

67% (2007)

70% (2005)

60% (2005)

67% (2007)

61% (2004)

71% (2004)

62% (2008)

67% (2006)

42% (2008)

53% (2007)

64% (2004)

40% (2007)

70% (2004)

57% (2008)

50% (2004)