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| adverts |  |
 1971 |
 1972 |
 1973 |
 1979 |
 1983 |
 1984 |
 1991 |
 1992 |
 1998 |
 2000 |
 2000 |
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| adverts | |
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1971 |
1972 |
1973 |
1979 |
1983 |
1984 |
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1991 |
1992 |
1998 |
2000 |
2000 |