72% (1972)

67% (1973)

64% (2013)

65% (2020)

38% (1979)

43% (1987)

68% (1989)

78% (1968)

70% (1979)

36% (2007)

68% (1980)

69% (1975)

70% (2003)

53% (1974)

61% (1974)

41% (1978)

63% (2013)

61% (1973)

57% (1994)

67% (1986)