0% (1970)

59% (1992)

65% (1991)

73% (2014)

62% (1988)

57% (2005)

67% (1964)

61% (1992)

68% (1970)

71% (1940)

69% (1931)

62% (1939)

46% (1996)

62% (2007)

69% (1996)

51% (1963)

72% (1935)

67% (1966)

69% (1958)

77% (1949)