74% (1979)

77% (1982)

75% (1972)

66% (1971)

65% (1970)

73% (1999)

70% (2016)

66% (2020)

74% (1977)

73% (1974)

71% (2010)

65% (1976)

69% (2011)

72% (1974)

66% (1979)

65% (2003)

75% (1997)

70% (2000)

69% (1987)

74% (1971)