If a gunman were to go out every day and shoot up a movie theater of say, 110 people, for the next century; the death toll[2] would be:
(110 * 365) * 100 = 4015000
Which is a little more than 4/5ths of double the annual fatalities in 2009. [0]
[0]: http://www.cdc.gov/nchs/fastats/deaths.htm
[1]: Of course, if our hypothetical gunman only targeted movie theaters, going to any single movie theater on a given day might be a risky proposition. If someone can find the number of people who see a movie every day in the US I'd love to know.
[2]: Actually, shot != death; so the death toll would be lower. Of course then you have to think about things like permanent debilitation and traumatic memories, not to mention healthcare costs.
According to this table:
http://www.reddit.com/r/news/comments/wv8t1/comprehensive_ti...
There were 60 victims, and 38 have been released from the hospital. 8 are still in critical condition, so we can't know if they'll live or die.
I'm going to assume, just for the sake of being on the pessimistic side of estimations (I don't actually believe this.), that everyone in critical care dies.
So presumably that would mean:
60 - 38 = 22.
Depending on the lethality of the shooter and random chance, the death toll may be as much as 2/3rds lower than the total number of those injured.
EDIT: This post originally said:
Which is still lower than the amount of people killed by heart disease in a single year here in the US. [0][1]
At the first citation.