| peak in 1979 | 0.25 |
| take action | 0.25 |
| authorize strike | 0.25 |
| fall by half | 0.16 |
| remained strong | 0.16 |
| denied | 0.55 |
| terminated for reason | 0.55 |
| required | 0.44 |
| drawn | 0.38 |
| concerned | 0.33 |
| determined by the trust… | 0.33 |
| based | 0.30 |
| restricted | 0.30 |
| granted | 0.25 |
| cut in half | 0.16 |
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