78% (1973)

72% (1968)

72% (1966)

71% (1972)

70% (1965)

64% (1980)

67% (1971)

69% (1966)

55% (2019)

60% (1972)

64% (1969)

63% (1965)

65% (1978)

47% (1970)

63% (1963)

41% (2015)

100% (2007)

0% (1970)