It can help if you split the industry down into two parts then ask the same question. The first been the "career jobs" the second the "contract sector".
There are lots of guys out in the contract sector trying to get into the career job sector
There are lots of rated pilots out there with experience on type, and many not in the jobs they would like to build a career at.
You also have lots of guys with experience but not on the type that helps bag the career job.
Then the guys either training or fresh out of training.
In the UK you also have quite a population of cadets from preferred schools that go straight into the career jobs straight from flight school, wiich further narrows the available number of career jobs
Depends what sort of flying you are looking for, if you are comfortable spending your career moving round the world every two or three years id guess it isnt unreasonable to state this shouldnt be too difficult with a rating on your licence, with the possibility of earning money to ensure a very good standard of living in the country you would end up in
If you are looking for a job close to home with good t&cs then that is a completely different kettle of fish. That said some people do drop lucky....
With regard the figures, its possible thay arent avaialable as I am sure that two or three of the schools in the UK would have them plastered on the first page of their websites if these statistics were available
Good luck