70% (2012)

64% (2007)

60% (2011)

68% (2015)

61% (2015)

61% (2003)

58% (2013)

62% (2012)

52% (2005)

90% (2004)

0% (2002)

0% (1990)

20% (2015)

75% (2006)

54% (1981)

74% (2003)

44% (1990)

65% (2015)

0% (1981)

78% (2011)