72% (2005)

69% (2009)

64% (2006)

56% (2013)

67% (2003)

58% (2003)

60% (2004)

55% (2011)

54% (2004)

61% (2006)

62% (2006)

54% (2003)

58% (2004)

56% (2007)

39% (2012)

49% (2003)

56% (2002)