Are you sure you aren't looking at the finale scores only? So far the world cup has seen 53 goals in 18 matches, and we're only about a quarter through.
No, I'm pretty sure you're correct. See my above disclaimer.
Three goals a match, though, still seems more like something rare enough that you might prefer to focus your attention elsewhere and be alerted when they happen than like something that will slowly drive you insane. Do the matches happen at predictable times?
Edit: numbers updated, I wasn't looking right.