60% (2001)

80% (2009)

69% (2000)

72% (2007)

66% (2004)

76% (2003)

67% (2004)

63% (2009)

75% (2010)

64% (2004)

71% (2003)

62% (2004)

70% (2005)

62% (1999)

69% (2000)

70% (2001)

52% (2007)

66% (2007)

72% (2002)

66% (1999)