73% (1979)

72% (1977)

69% (1979)

67% (1978)

59% (1979)

65% (1976)

59% (2005)

0% (1975)

0% (1973)

49% (1977)

25% (1980)

70% (2020)

60% (1980)

0% (1987)

0% (1981)

0% (1982)