| Value | Category |
|---|---|
| -9 | Don’t know |
| -7 | Not in business three years ago |
| 1 | ANSWERS IN 2010 AND 2006 ARE THE SAME |
| 2 | ANSWER IN 2010 IS INCORRECT AND ANSWER IN 2006 IS CORRECT |
| 3 | ANSWER IN 2010 IS CORRECT AND ANSWER IN 2006 IS INCORRECT |
| 4 | ANSWER IN 2010 IS INCORRECT AND ANSWER IN 2006 IS INCORRECT |
| 5 | NO ANSWER FOR 2006 |
| Sysmiss |