| Value | Category | Cases | |
|---|---|---|---|
| 1 | Much less, lowest amount in past 5 years | 0 |
0%
|
| 2 | Less | 5 |
25%
|
| 3 | About the same | 9 |
45%
|
| 4 | More | 1 |
5%
|
| 5 | Much more, highest amount in past 5 years | 2 |
10%
|
| 6 | Not applicable | 3 |
15%
|
| Sysmiss | 1963 |