| 
	|
| Frequency | Percent | Valid Percent | Cumulative Percent | ||
|---|---|---|---|---|---|
| Valid | Available, but rarely used | 98 | 10.4 | 28.4 | 28.4 | 
| Available and used to some extent | 84 | 9.0 | 24.6 | 53.0 | |
| Available and used tp a large extent | 57 | 6.0 | 16.5 | 69.5 | |
| Exhausted | 57 | 6.0 | 16.5 | 86.0 | |
| were never available | 48 | 5.1 | 14.0 | 100.0 | |
| Total | 343 | 36.6 | 100.0 | ||
| Missing | 99 | 595 | 63.4 | ||
| Total | 938 | 100.0 | |||