Answer
2006, 2007, 2008, 2009, 2011
Work Step by Step
72000/12000 = 6
Look at the graph to see which years have more than 6 fires
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.