Gravity points for frut?

I'm making up a recipe for blueberry ale, and I was wondering if there is any information out there about how much 1 pound of blueberries will raise the gravity of the beer?

Blueberries are 85% water, 10% sugar:
http://www.blueberry.org/technical01.htm#Sugars

Using 100% corn sugar at 46 points as a baseline, I'd guess blueberries would give you 10% of that: ~4-5 points per lb per gallon at the most.

Thanks Bike N' Brew

And blueberries are at the high end of the sugar scale. It's not unusual for raspberries to be around 4% sugar.

Bottom line: Ignore the fruit sugars.

So I did a mead that had an OG of 1.142.

honey = 35 GU
maple syrup = 30 GU
what about Apple cider (bottle from the store)?
what about cranberry juice (bottle from the store)?

Even estimates would help.

Adding only the honey and maple syrup in beersmith gives me 82 GU.
I can't believe the juices are the difference...

Here are my quantities:
12# Honey (Silverbow Clover)
32oz Maple Syrup (pure)
2C Cranberry Juice Cocktail (Ocean Spray)
64oz Apple Cider (Albertson's)

Thanks for any info...