TABLE 3.
First year of work |
Number of subjects |
|||||
---|---|---|---|---|---|---|
Year of completion of work |
||||||
1986 | 1987 | 1988 | 1989 | 1990 | All | |
1986 | 291 | 50 | 20 | 11 | 36 | 408 |
1987 | 63 | 16 | 4 | 5 | 88 | |
1988 | 46 | 4 | 50 | |||
1989 | 18 | 3 | 21 | |||
1990 | 5 | 5 | ||||
1986–1990 | 291 | 113 | 82 | 37 | 49 | 572 |