56% (1973)

56% (1959)

0% (1981)

40% (1966)

20% (1977)

67% (1980)

0% (1986)

55% (1964)

30% (1975)

69% (1968)

66% (1974)

51% (1966)

50% (1980)

87% (1959)

57% (1969)

50% (1980)

85% (1981)

40% (1964)

30% (1969)

0% (1974)