LTNman - when an airport has 42,000 passengers (i.e. barely registers as a commercial passenger airport), and then receives a brand new terminal just before the summer season begins in March, along with a railway station and a load of routes are opened by a large airline, it is to be expected that both this year and next, the %'age passenger number increase is bound to be extremely high. Thus your prediction for 2012 and 2013 is not particularly eye-opening.
The CAA stats for the 12 months ending June 2012 published a month ago indicate a growth in passenger numbers of approx 1,000 %.
Add in the extra passenger numbers for the Nov12-Mar13 season, and the %'age increase for 2013 will also be extremely high, simply because Jan12-Mar12 had very few passengers and Easyjet only began operations in April 2012
I am slightly surprised that in 2014 you expect next to no growth. What does "next to no growth" mean ? Below 1% ? Below 5% ? Below 10% ? Or something else ?