73% (1979)

75% (1972)

77% (1982)

73% (1999)

72% (2010)

66% (2020)

74% (1974)

66% (1979)

69% (1987)

60% (2005)

74% (1977)

70% (2016)

65% (1970)

69% (1984)

69% (2011)

66% (1976)

74% (1971)

66% (2019)

64% (2003)

61% (2001)