Average rate for 20 years, 10 years, and 5 years in R

Question

I am trying to find the average rate of a certain virus between 2002-2021, 2002-2012, and 2002-2007 by another variable "jurisdiction". The code I have right now is:

avgrate20 <- ratesmerge %>%
  group_by(Jurisdiction) %>%
  summarize(
    Years = paste(range(2002:2021), collapse = "-"),
    across(starts_with("rate"), mean)
  )

When I change Years = paste(range(2002:2021), collapse = "-") to 2002-2012, it still takes the mean from 2002-2021.

Here is my output when doing head(df)

Any help would be appreciated