fact 70m are voting with their feet
Most people are on return trips so thats 35m. trips.
Those who use Ryanair will do so many times per year, esp those working away from home or will a 2nd home. It is very likely that ryanair have only 15m different pax per year who do an average of 5 sectors a year.
For each one the airline upsets they lose on average 5 sectors.
2012 may be a very hard year with a large rise in fuel costs, workers upset with pay freeze and extra airport taxes.