For the N deme, the population size remained at 1400 until 4098.1071 generations ago, at which point a exponential growth took place until 2681.0 generations for size 6775. Afterward, the population saw an linear change to 5156 by 1844.324. From 1844.324 generations ago to today, there's been a exponential growth from 5156 to 5183.
time_units: generations
demes:
  - name: N
    start_time: .inf
    epochs:
      - start_size: 1400
        end_time: 4098.1071
      - start_size: 1400
        end_size: 6775
        end_time: 2681.0
        size_function: exponential
      - start_size: 6775
        end_time: 1844.324
        end_size: 5156
        size_function: linear
      - end_time: 0
        start_size: 5156
        end_size: 5183
        size_function: exponential