Literal question
15. Of the firewood you used in the past week, how much of it did you purchase?</p>
<div class="i1">[ ] 1 Did not use firewood (go to q17)<br />[ ] 2 All<br />[ ] 3 Almost all<br />[ ] 4 More than half<br />[ ] 5 Half<br />[ ] 6 Less than half<br />[ ] 7 A little<br />[ ] 8 None</div>