Are you sure?

The following question was asked in a Newsweek poll
How much longer do you think the current economic recession is likely to last? Would you say?

12 Less than 12 months
54 One to two years
23 Three to five years, OR
8 More than five years?
3 (DO NOT READ) Don’t know

It always surprises me how few people are willing to admit that they don't know the answer to a question.