75% (1978)

50% (2011)

69% (1987)

64% (2006)

63% (2018)

67% (2007)

73% (1955)

50% (1983)

53% (1980)

62% (1983)

59% (1980)

55% (1979)

66% (1972)

54% (1980)

55% (1996)

63% (1969)

70% (1972)

49% (1970)

54% (1986)

56% (1985)