The relationship between salary and inflation is not about the increase in your specific expenses, but about the decrease in the value of the dollar.
If one employee has fixed rent and another has had a 20% jump in rent, that's not a factor that should matter when assigning raises, but the generic average inflation value definitely is, as last year's $100k is simply worth more than this year's $102k.
I'm on a 1-year lease, so my rate didn't change. It might change when the lease ends next year.