Is this popular

Rating: 8/10 (28 January 2006)

I've just seen this movie today, as it was only released in Australia on Thursday (Jan 26, Australia Day). Despite it being a bit too long, I really thought it was very good, better than I expected.
What I would like to know, is this movie popular in the US? I'm confused because it has only appeared on the US Box Office Top 10 three times and has since dropped off. Was it well received there, is it popular? Just curious.
I'm sure it did veer from the facts, as all movies do, but I thought it was very interesting. (N.B. I do not know enough about the situation to comment or take sides, so please reserve those opinions for another thread).