64% (2006)

72% (2005)

61% (2004)

59% (2003)

70% (2009)

55% (2013)

67% (2003)

62% (2006)

54% (2004)

56% (2007)

55% (2011)

58% (2004)

55% (2003)

62% (2006)

54% (2002)

50% (2003)

39% (2012)