When did dodge start installing air bags from factory?

Dodge, as to my knowledge, never did. But, sometime after Ram split from Dodge and became their own company, they started offering 4 corner air ride. It was around 2013 model year, if I remember, as I heard the EcoDiesels were coming soon. As for the 2500s and 3500s, that was like 2015 or 2016 model years.