http://www.thelocal.se/15610/20081111/
Hardly an "epidemic"
The number you tout is only made from a questionairre and hardly represents the full scope but yet it still showed an increase from only 3 or so cases being reported in previous studys.
Here read something a little more recent:
Sweden urged to ban animals sex after newspaper expose on bestiality -
http://www.timesonline.co.uk/tol/news/world/europe/article5140576.ece