Look at the performance of the UK regional market in general from it's peak in 2007.
Airports that were handling less than 2m at the peak have declined by 40%.
Airports that were handling between 2m - 6m at peak, have declined by 15%
Airports that were handling over 6m, have declined by 7%
The London market has declined by 2%.
Teesside is the worst performer in the 'less than 2m' category (with the exception of Coventry, which closed). Newcastle is the second worst performer in the 2m - 6m category. When you group airports together regionally, the performance reads as
-2% : London / SE
-10%: Yorks & Humberside
-11%: Scotland
-12%: North West
-12%: Northern Ireland
-14%: Midlands
-16%: South West & Wales
-28%: North East
In summary, Teesside performance has mirrored that of pretty much all other 'small' airports, a situation made worse by the fact it exists in a region that has fared disproportionately worse than the market in general.