I tell you average wage is lower in Sweden than Norway. The number you had for Sweden Might be for average full time employed person 37,5 hours a week with 5-6 weeks vacation. The number for that in Norway is probably around 350000 kroner. 55500 Dollars. Average minmum wage is higher in Norway too. Around 16-17 dollars an hour
The article is from 2003, and perhaps the statistics have changed.
I noted the article said Sweden had a "weak currency," and so I assume at the time Sweden was not part of the "Euro zone," which they probably are now.