52% (2001)

74% (2007)

60% (2001)

72% (2006)

71% (2007)

62% (2010)

60% (1999)

58% (2001)

74% (2004)

63% (2002)

41% (2000)

67% (2007)

62% (2004)

66% (2007)

54% (2004)

60% (2005)

64% (2001)

72% (2005)

58% (2006)

69% (2006)