Deme D maintained a population of 5886 until there was a shift 9249.13 generations ago that changed its numbers to 2626, a figure that has remained the same since.
time_units: generations
demes:
  - name: D
    start_time: .inf
    epochs:
      - start_size: 5886
        end_time: 9249.13
      - start_size: 2626
        end_time: 0