55% (1969)

50% (1960)

70% (1960)

70% (1953)

20% (1970)

47% (1962)

59% (1958)

56% (1955)

70% (1954)

0% (1953)

90% (1955)

45% (1959)

0% (1956)

54% (1958)

45% (1956)

40% (1970)

20% (1971)

40% (1956)

50% (1959)

50% (1955)