67% (2003)

67% (2004)

70% (2007)

43% (2008)

49% (2007)

59% (2005)

60% (2005)

45% (2005)

60% (2006)

57% (2007)

66% (2005)

63% (2005)

64% (2003)

61% (2007)

47% (2007)

61% (2006)

78% (2006)

61% (2008)

64% (2006)

51% (2005)