134 places per year at the college sounds right... figures between 10 and 45 thousand applicants have been mooted around, as someone previously pointed out, a fair amount of people may apply and never show up for the tests.
For what its worth, numbers I heard through the selection process
Stage 1 - 90% fail
Stage 2 - 33% fail
Stage 3 - 33% fail
College - 30-40% fail
Live Training - 30-40% fail
Lies, damn lies, and statistics??