For the C deme, the population size remained at 7406 until 9110.574 generations ago, at which point a linear change took place until 9013.096 generations for size 1172. Afterward, the population saw an linear change to 1203 by 996.0. From 996.0 generations ago to today, there's been a exponential change from 1203 to 1526.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 7406
        end_time: 9110.574
      - start_size: 7406
        end_size: 1172
        end_time: 9013.096
        size_function: linear
      - start_size: 1172
        end_time: 996.0
        end_size: 1203
        size_function: linear
      - end_time: 0
        start_size: 1203
        end_size: 1526
        size_function: exponential