69% (1980)

67% (1992)

52% (2013)

70% (1963)

65% (1969)

60% (1962)

68% (2008)

58% (1974)

45% (1977)

74% (1976)

47% (1961)

55% (1965)

50% (1972)

47% (1997)

49% (1969)

67% (2017)

80% (2005)

70% (1977)

74% (2017)

51% (1997)