60% (2010)

72% (2009)

70% (2006)

60% (2000)

62% (2002)

56% (2007)

54% (2011)

58% (2008)

68% (2006)

41% (2008)

65% (2002)

60% (2008)

60% (2008)

52% (2007)

66% (2008)

65% (1999)

58% (2006)

65% (2008)

62% (2000)

67% (2007)