this info is from back in february, but there's no reason to think things have improved. I would say take comfort, but it's not very comforting.
Have you looked at the “virality rate” statistic in your page insights — the percentage of fans who reshare a page’s posts and wondered why the percentage looked so low?
Take heart: 61 percent of page have a virality rate of 2.5 percent or less, according to EdgeRank Checker.
The median rate came out to 1.9 percent.
via allfacebook.com click for full article - it's worth the read