80% (1980)

80% (1973)

100% (1972)

60% (1990)

0% (1975)

70% (1969)

70% (1990)

0% (1967)

0% (1977)

80% (1976)

50% (1991)

0% (1992)

0% (1973)

0% (1982)

90% (1968)

80% (1984)

0% (1975)

0% (1989)

70% (1994)

10% (1991)