67% (2003)

68% (2004)

54% (2005)

70% (2007)

68% (2007)

62% (2005)

63% (2005)

66% (2005)

43% (2008)

56% (2004)

51% (2005)

44% (2005)

61% (2007)

64% (2008)

74% (2007)

64% (2006)

44% (2008)

64% (2003)

57% (2007)

59% (2004)