Still, Copengahen Airport has the far most passengers per annum. Over 21 million passengers went through Copenhagen airport in 2012. Arlanda airport in Stockholm, Sweden, had the second highest number, close to 15 million passengers. But notice that each passenger is counted twice, when they arrive and when they leave again. No domestic passengers are counted though.
In the following table, you can see the number of passengers that went through the biggest airports in Scandinavia in 2012 and the increase in passengers from 2011 to 2012: