70% (2011)

69% (2012)

64% (1996)

70% (2011)

62% (2012)

63% (2013)

66% (2008)

51% (2008)

65% (2009)

66% (1994)

60% (2012)

45% (1995)

53% (2002)

58% (1997)

55% (2013)

53% (1995)

64% (2009)

58% (2013)

63% (2008)

64% (1995)