I believe it's that; as well, a target or a limit is given to each one of these offices. They have a limit to the number of people they can accept in a year. If they get many, many applications in relation to that limit, obviously the delays are going to go up.
I don't believe it's necessarily a question of being inefficient. There may be some element of inefficiency, but I really think it relates to the number of applications they're receiving versus the number they can accept.