68% (1986)

50% (1997)

63% (1978)

72% (1981)

65% (1990)

69% (1987)

62% (1990)

67% (1976)

73% (1975)

42% (1991)

67% (2015)

0% (1951)

55% (1981)

63% (2015)

49% (2005)

73% (1995)

53% (1979)

68% (2015)

79% (1985)

62% (1955)