69% (2007)

54% (2008)

55% (2010)

49% (2013)

62% (2007)

43% (2008)

65% (1993)

46% (2007)

61% (2009)

46% (2008)

41% (2011)

65% (2010)

52% (2008)

68% (2009)

58% (2007)

72% (2012)

57% (2011)

59% (1997)

40% (2007)

66% (1994)