I don't have any data in terms of who has decided not to make an access request. Obviously that would be very difficult to measure.
What I would say, and I have said this many times, is that the way the system works now is not conducive to Internet generations making access requests. You have to send a letter and you have to send a $5 cheque.
I will share this with you without naming anyone, but I have actually received complaints where people think government departments are using a delay tactic by obliging them to send a $5 cheque. My 20-year-old children do not use cheques; they don't own a chequebook. Something in the system is so arcane that it's just not responsive to the tech-savvy generation of people. They don't expect to have to write a $5 cheque--which probably costs around $70 for the government to process-- instead of sending something by PayPal.
So it's not only that it's taking a long time, it is no longer living in modern times.