| Value | Category | Cases | |
|---|---|---|---|
| 1 | only from P.D.S. | 57888 |
49.9%
|
| 2 | only from other sources | 21940 |
18.9%
|
| 3 | from both sources | 19019 |
16.4%
|
| 4 | not purchased | 17132 |
14.8%
|