78% (1999)

65% (2013)

48% (2006)

45% (2005)

71% (2004)

35% (1971)

0% (1987)

50% (2014)

61% (1968)

50% (2005)

47% (2005)

40% (2003)

0% (2006)

39% (2011)

50% (2011)

43% (2001)

70% (1965)

72% (2012)

0% (1973)

0% (1971)