56% (1988)

75% (1970)

72% (1971)

52% (1970)

67% (1981)

45% (1970)

70% (1979)

62% (1986)

56% (1980)

20% (1969)

61% (1983)

60% (1983)

60% (1970)

0% (1971)

0% (1993)

0% (1971)