Initially, the population size of deme N stood at 7908, but this changed 3166.9323 generations ago when it reduced to 4507, and it has been stable at that size up to today.
time_units: generations
demes:
  - name: N
    start_time: .inf
    epochs:
      - start_size: 7908
        end_time: 3166.9323
      - start_size: 4507
        end_time: 0