Here in the ME, I would suggest that every station is a minimum of 20% under what they should have. The ANSPs have reacted, and are trying to address the issue in time-honoured fashion; throwing money at the problem. They have that luxury.
I haven't heard of many places in the world that aren't nearing critical staffing levels. The problem being that the management culture (seamingly worldwide) in recent years has been to try and screw every penny they can out of the system. That includes infrastructure, terms and conditions of employees, productivity, and most importantly training. The job just doesn't hold the appeal anymore, so both quality and quantity of applicants has declined.
So while the manager who has penny-pinched the most has been the golden boy of the day with the biggest bonus, the system has been relentlessly, inexorably, PREDICTABLY, grinding to a halt. I know where I was trained, people simply gave up trying to warn of this some time ago. The head hurt too much after all the fruitless banging against the productivity wall.
In Australia, there has been some media coverage of late, as large chunks of airspace go without a control service on a regular basis. Those same managers then claim they were unaware this would happen, and that it is not the result of mis-management!! (guffaw guffaw).
I can only suggest that you guys help yourselves, bite the bullet and stop covering your management's shortcomings. If you can't safely staff sectors/airspace; close them. I bet you might get some coverage (and, thereby, action) then. You can 'act as professionals' stretching and stretching for only so long, before you are really acting in the disinterest of both the profession, the industry, and the public.
Bring those who caused this situation to account.