61% (2014)

69% (2013)

41% (1975)

55% (1974)

47% (1973)

57% (1973)

45% (2007)

55% (1949)

70% (2016)

62% (2015)

30% (1972)

50% (1972)

0% (1973)

66% (2015)

0% (1971)