50% (1952)

45% (1966)

0% (1957)

50% (1958)

45% (1981)

70% (1955)

39% (1974)

55% (1965)

47% (1959)

60% (1975)

50% (1964)

20% (1976)

0% (1981)

0% (1958)

0% (1975)

0% (1951)