The deme of U kept its population at 1742 until 6480.0 generations ago, when a linear increase ensued until 3504.0, to size 6897. Subsequently, a exponential change changed the numbers to 6835 individuals by 1092.0. Starting from 1092.0, the population has seen a growth from 6835 to 9710 at a exponential pace, continuing to this day.
time_units: generations
demes:
  - name: U
    start_time: .inf
    epochs:
      - start_size: 1742
        end_time: 6480.0
      - start_size: 1742
        end_size: 6897
        end_time: 3504.0
        size_function: linear
      - start_size: 6897
        end_time: 1092.0
        end_size: 6835
        size_function: exponential
      - end_time: 0
        start_size: 6835
        end_size: 9710
        size_function: exponential