30% of Americans don't know when 9/11 was

Yeah, you read the title right.

"Some 30 percent of Americans cannot say in what year the September 11, 2001 terrorist attacks against New York's World Trade Center and the
Pentagon in Washington took place, according to a poll published in the Washington Post newspaper...of that group, six percent gave an earlier year, eight percent gave a later year, and 16 percent admitted they had no idea whatsoever." [Source: The Washington Post]

Since the poll is by the Washington Post, I have some severe doubts about the group of people they surveyed. Is there any data as to how many people were surveyed? Can this poll really be generalized? Were all of the poll takers readers of the Washington Post? Are they all lacking any traces of what might be a cerebrum, like the readers of the Washington Post?

Or did the Washington Post just make up this number, like data they have produced in the past has been? Need proof? Read Godless, by Ann Coulter. Trust me, you'll never want to read another word from a liberal news source, once you see how common it is for them to skew or even make up information to help them accomplish their sick political agendas. I wouldn't be a bit suprised if they just decided to make this number up, or if they only interviewed crazy, mentally challenged individuals that couldn't tell you what month of the year it was if their life depended on it. Maybe it's their way of showing you how (supposedly) 30% of America doesn't remember the motives behind the war, and using that as backup for them of why we shouldn't have fought it in the first place. They're probably trying to combat what the World Trade Center movie has reminded us, that what we're fighting for in Iraq really does matter.