Possible enumeration values:
| Name | Value | Description | 
|---|---|---|
| ED_1 | 1 | Enrollment Duration 1 month | 
| ED_2 | 2 | Enrollment Duration 2 months | 
| ED_3 | 3 | Enrollment Duration 3 months | 
| ED_4 | 4 | Enrollment Duration 4 months | 
| ED_5 | 5 | Enrollment Duration 5 months | 
| ED_6 | 6 | Enrollment Duration 6 months | 
| ED_7 | 7 | Enrollment Duration 7 months | 
| ED_8 | 8 | Enrollment Duration 8 months | 
| ED_9 | 9 | Enrollment Duration 9 months | 
| ED_10 | 10 | Enrollment Duration 10 months | 
| ED_11 | 11 | Enrollment Duration 11 months | 
| FULL_YEAR | 0 | Enrollment Duration 12 months (full year) |