For the G deme, the population size remained at 546 until 9621.9456 generations ago, at which point a linear change took place until 9407.0 generations for size 4046. Afterward, the population saw an linear increase to 6237 by 5096.43. From 5096.43 generations ago to today, there's been a exponential change from 6237 to 3929.
time_units: generations
demes:
  - name: G
    start_time: .inf
    epochs:
      - start_size: 546
        end_time: 9621.9456
      - start_size: 546
        end_size: 4046
        end_time: 9407.0
        size_function: linear
      - start_size: 4046
        end_time: 5096.43
        end_size: 6237
        size_function: linear
      - end_time: 0
        start_size: 6237
        end_size: 3929
        size_function: exponential