67% (2007)

77% (2001)

68% (2001)

67% (2001)

76% (2004)

67% (2004)

56% (2003)

60% (2007)

48% (2004)

48% (2006)

52% (2002)

48% (2001)

54% (2000)

46% (2007)

48% (2005)