Up until 7313.595 generations ago, the population of U deme was constant at 1188. It then entered a linear phase of increase until 6714.7095 generations, reaching size 5092. This was succeeded by an linear phase of decrease, leading to 1034 by 5376.4164. From 5376.4164 generations to present, the population has increased from 1034 to 5505 exponentially.
time_units: generations
demes:
  - name: U
    start_time: .inf
    epochs:
      - start_size: 1188
        end_time: 7313.595
      - start_size: 1188
        end_size: 5092
        end_time: 6714.7095
        size_function: linear
      - start_size: 5092
        end_time: 5376.4164
        end_size: 1034
        size_function: linear
      - end_time: 0
        start_size: 1034
        end_size: 5505
        size_function: exponential