50% (1987)

70% (1977)

0% (1981)

51% (1979)

61% (1972)

47% (1976)

40% (1973)

0% (1984)

80% (1989)

0% (1951)

10% (1983)

54% (1978)

52% (1964)

60% (1979)

40% (1985)

42% (1992)

60% (1986)

0% (1957)

50% (1969)

80% (1991)