71% (1962)

62% (1960)

50% (1971)

73% (1961)

67% (1953)

0% (1959)

24% (1961)

0% (1950)

43% (1962)

58% (1963)

50% (1963)

60% (1953)

61% (1957)

70% (1951)

60% (1972)

47% (1955)

10% (1959)