54% (1989)

80% (1964)

67% (1968)

83% (1968)

57% (1955)

48% (1965)

58% (1955)

59% (1961)

37% (1972)

43% (1969)

57% (1963)

57% (1975)

61% (1980)

60% (1980)

31% (1979)

90% (1976)

46% (1980)

40% (1979)

0% (1983)

48% (1958)