75% (1972)

74% (1979)

72% (2010)

76% (1982)

69% (1987)

73% (1999)

66% (1979)

65% (1976)

66% (2020)

69% (1984)

65% (1970)

73% (1974)

70% (2016)

65% (2003)

74% (1977)

69% (2011)

74% (1971)

66% (1971)

53% (1968)

72% (1974)