The number of individuals in deme L remained at 3528 until 4760.194 generations ago, at which time it increased to a new stable size of 7144.
time_units: generations
demes:
  - name: L
    start_time: .inf
    epochs:
      - start_size: 3528
        end_time: 4760.194
      - start_size: 7144
        end_time: 0