52% (1968)

68% (1970)

60% (1989)

0% (1976)

60% (1961)

0% (1995)

44% (1988)

96% (1983)

60% (1968)

56% (1973)

70% (1964)

56% (1977)

0% (1984)

50% (1963)

50% (1969)

50% (1970)

63% (1992)

60% (1973)

67% (1987)

0% (1981)