| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 1415 |
1.5%
|
|
| 1 | Essential | 73759 |
77.2%
|
| 2 | Desirable but not essential | 18406 |
19.3%
|
| 3 | Neither | 1455 |
1.5%
|
| 98 | Dont Know | 461 |
0.5%
|