| Value | Category | Cases | |
|---|---|---|---|
| 1 | High income: OECD | 1323 |
12.9%
|
| 2 | High income: nonOECD | 1862 |
18.1%
|
| 3 | Low income | 2401 |
23.3%
|
| 4 | Lower middle income | 2693 |
26.2%
|
| 5 | Upper middle income | 2009 |
19.5%
|
| Sysmiss | 3 |