92% (2012)

78% (2015)

66% (1989)

82% (2010)

0% (2015)

59% (2016)

50% (2013)

79% (2009)

86% (2010)

48% (2006)

71% (1973)

80% (1999)

20% (2013)

46% (2004)

82% (2010)

86% (2005)

0% (1961)

85% (2011)

80% (1972)

71% (1984)