Initially, the population size of deme E stood at 7589, but this changed 4609.641 generations ago when it grew to 7968, and it has been stable at that size up to today.
time_units: generations
demes:
  - name: E
    start_time: .inf
    epochs:
      - start_size: 7589
        end_time: 4609.641
      - start_size: 7968
        end_time: 0