What is Rocket's lifespan?

Aw, what the hell, I don't got that long a lifespan anyway.

Typically, a terran raccoon in the wild has an average lifespan of up to three years, or 20 if living in captivity.

Rocket, however, has been genetically modified via implants and experimentation. What is Rocket's life expectancy after having gone through the modifications?

*Note that Marvel Universe's page mentions that Rocket is still alive 10-15,000 in the future, but that no information has been revealed as to how he's alive in that era, having possibly gone through a time warp.