Return TD's
 

Sorry if this has been discussed ad nauseum, but what would you all consider to be a "typical" number of Interception, Kick Return, and Punt Return TD's for a league in a season.

My teams seem to return A LOT of interceptions for TD's. Now, it might be that I try to get really good cornerbacks and safeties, but I'm wondering what would be considered normal.

Thanks.