| Value | Category |
|---|---|
| -9 | Don't know |
| -7 | Not in business three years ago |
| 0 | |
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 18 | |
| 19 | |
| 20 | |
| 23 | |
| 25 | |
| 26 | |
| 28 | |
| 30 | |
| 35 | |
| 36 | |
| 40 | |
| 45 | |
| 48 | |
| 49 | |
| 50 | |
| 54 | |
| 57 | |
| 60 | |
| 75 | |
| 80 | |
| 90 | |
| 120 | |
| 121 | |
| 131 | |
| 160 | |
| 170 | |
| 200 | |
| 225 | |
| 281 | |
| 289 | |
| 340 | |
| 350 | |
| 410 | |
| 450 | |
| 500 | |
| 550 | |
| 850 | |
| 1000 | |
| 1050 | |
| 1210 | |
| 1500 | |
| 64000 |