86% (2013)

72% (2007)

76% (2002)

83% (2015)

76% (1964)

71% (1983)

0% (1970)

79% (2003)

74% (2006)

83% (2012)

46% (1988)

54% (1972)

75% (1964)

68% (2004)

79% (1978)

76% (1997)

0% (1994)

69% (2017)

45% (1997)

55% (2002)