68% (2005)

64% (2005)

73% (2005)

56% (2003)

58% (2003)

55% (2009)

58% (2008)

60% (2008)

69% (2008)

53% (2004)

68% (2004)

63% (2007)

61% (2006)

63% (2006)

48% (2007)

55% (2007)

62% (2006)

56% (2007)

58% (2006)

0% (1970)