66% (2010)

61% (2002)

61% (2008)

72% (2012)

64% (2011)

59% (2014)

67% (1999)

55% (2006)

52% (2011)

58% (2003)

59% (1999)

64% (2002)

51% (2001)

79% (2003)

74% (2006)

58% (2006)

54% (2002)

54% (2007)

46% (2008)

55% (1998)