74% (1979)

69% (1987)

76% (1982)

75% (1972)

66% (2020)

72% (2010)

65% (1970)

66% (1979)

73% (1999)

72% (1986)

66% (1971)

65% (1976)

70% (2016)

69% (1984)

74% (1977)

73% (1974)

53% (1968)

65% (2003)

69% (2011)

72% (1974)