61% (2014)

68% (2013)

47% (1973)

46% (2007)

0% (1971)

41% (1975)

56% (1974)

62% (2015)

57% (1973)

30% (1972)

66% (2015)

55% (1949)

50% (1972)

0% (1973)

70% (2016)