The number of passengers through Sligo Airport for 11 months Jan-Nov 2010 was
19,780. So we could reasonably estimate that passenger numbers were just over 20,000 for the full year 2010.
Everything you ever wanted to know about passenger numbers and how much it costs you - the taxpayer - to support regional airports at this link
HERE
It is just two pages long and gives a 6 year summary for:
Government grants to each airport for following:
1) Public Service Obligation (PSO) spend
2) Subsidy towards operational spending (OPEX)
3) Subsidy towards capital spending (CAPEX)
and
4) Passenger numbers