75% (1970)

62% (1990)

50% (1997)

0% (1961)

68% (1987)

58% (2008)

59% (2009)

79% (2007)

64% (1992)

73% (2022)

60% (1962)

50% (1980)

63% (1950)

74% (1975)

75% (1981)

73% (1979)

64% (2011)

65% (1969)

60% (1959)

63% (1968)