70% (1976)

56% (1980)

61% (1965)

60% (2000)

76% (1988)

71% (2005)

70% (1972)

84% (1957)

65% (1970)

90% (1991)

57% (1969)

60% (2017)

64% (1978)

80% (1995)

57% (1963)

70% (1977)

64% (1995)

71% (2016)

95% (2003)

72% (1983)