70% (1969)

74% (1983)

53% (1992)

75% (1997)

73% (2004)

90% (2017)

52% (1971)

67% (2007)

69% (1974)

70% (2004)

66% (2014)

52% (1979)

75% (1988)

70% (2007)

81% (1982)

75% (2011)

54% (1975)

71% (1986)

56% (1991)

70% (1996)