56% (1988)

75% (1970)

61% (1986)

73% (1971)

70% (1979)

67% (1981)

60% (1983)

56% (1980)

0% (1971)

45% (1970)

59% (1983)

60% (1970)

70% (1971)

52% (1970)

40% (1969)

0% (1993)