How old are NFL players?

I was wondering how old are NFL players.  Or, how old am I compared to NFL players, so I downloaded all of the NFL rosters as of 11/7/2013 and charted the ages! Here are some stats:

Youngest: 21 (23 players)

Oldest: 40 (Adam Vinatieri)

Average: 26.1

Median: 25

25th Percentile: 24

75th Percentile: 28

95th Percentile: 32

99th Percentile: 36

So basically, if you're over 30, you're older than 85% of the NFL.  If you're over 40, well. You're not in the NFL.  Here's the frequency distribution chart of ages: