67% (1988)

42% (1986)

60% (1986)

45% (1979)

48% (1970)

56% (1977)

60% (1969)

0% (1986)

60% (1990)

61% (1966)

0% (1966)

51% (1986)

0% (1971)

55% (1988)

0% (1953)

0% (1974)

0% (1989)

0% (1986)

70% (1988)

75% (1985)