The deme of A kept its population at 5261 until 9313.0 generations ago, when a linear reduction ensued until 8000.5, to size 301. Subsequently, a linear change changed the numbers to 8300 individuals by 7895.0. Starting from 7895.0, the population has seen a reduction from 8300 to 572 at a linear pace, continuing to this day.
time_units: generations
demes:
  - name: A
    start_time: .inf
    epochs:
      - start_size: 5261
        end_time: 9313.0
      - start_size: 5261
        end_size: 301
        end_time: 8000.5
        size_function: linear
      - start_size: 301
        end_time: 7895.0
        end_size: 8300
        size_function: linear
      - end_time: 0
        start_size: 8300
        end_size: 572
        size_function: linear