In population? Realy? That certainly surprises me. I always see Seweden as one of the smaller countries of Europe. Actualy I wanted to make a whole point that Sweden would be unable to compete with countries like Spain, France and England because it is significantly smaller than those countries. If Sweden isn't, that argument isn't correct.
Its a surprise to me too, but that COULD just be (IMO&AIUI) because in Sweden much of the population is concentrated in the south, so the population gets thought of as much smaller than what it actually is