67% (2003)

54% (2004)

60% (2005)

67% (2004)

43% (2008)

66% (2005)

70% (2007)

63% (2005)

50% (2005)

42% (2008)

64% (2008)

59% (2004)

54% (2005)

60% (2006)

47% (2007)

62% (2004)

78% (2006)

74% (2007)

64% (2006)

57% (2007)