72% (1982)

72% (1971)

72% (1970)

73% (1979)

0% (1974)

37% (1969)

73% (1983)

55% (1968)

50% (1980)

67% (1972)

0% (2009)

0% (1975)

69% (1974)

0% (1969)

0% (1971)