73% (1989)

55% (2001)

63% (1991)

69% (2001)

61% (2009)

62% (1985)

74% (2004)

60% (2006)

58% (2007)

77% (1966)

64% (1957)

61% (1991)

63% (2008)

65% (1999)

62% (2016)

72% (1956)

59% (1980)

67% (1984)

71% (1953)

66% (1991)