Different source of data.
This is from our own database we've been maintaining for about 5 years.
We have teams and awards that are missing from the current FIRST team database.
That doesn't mean that there aren't errors in our database too. They are just different mistakes.
This was just what I could knock out in a few minutes via a database query. Our database is undergoing redesign, so we have additional data that just hasn't been added to the main database. The redesign is why 2009 data wasn't readily available to sort by team number.
The 2009 FIRST event awards pages are missing for several competitions, but the team data has some of those missing awards.
And I've seen team pages that were incorrect too.
P.S.
It's probably pretty simple to calculate awards/year just because I have team years in a spreadsheet already. Awards/event requires some interesting merging of two data sources: events-by-team and this awards-by-team.