50% (1981)

42% (1985)

75% (1969)

54% (1961)

59% (1968)

10% (1981)

54% (1954)

0% (1985)

54% (1970)

60% (1968)

0% (1980)

45% (1966)

0% (1990)

40% (1972)

70% (1986)

0% (1964)

50% (1971)

0% (1987)

60% (1977)

0% (1973)