Until 3735.604 generations ago, the A deme's population was fixed at 630. From 3735.604 to 1942.7, it underwent a linear change to 7416 individuals. Then, a exponential change brought the count to 6137 by 822.33. Since then, from 822.33 generations to the current day, the population has changed from 6137 to 7826 at a linear rate.
time_units: generations
demes:
  - name: A
    start_time: .inf
    epochs:
      - start_size: 630
        end_time: 3735.604
      - start_size: 630
        end_size: 7416
        end_time: 1942.7
        size_function: linear
      - start_size: 7416
        end_time: 822.33
        end_size: 6137
        size_function: exponential
      - end_time: 0
        start_size: 6137
        end_size: 7826
        size_function: linear