Until a shift occurred 8300.2 generations ago, deme L's population was consistently 7952. Since then, it increased to 9571, a number that has remained unchanged to the current time.
time_units: generations
demes:
  - name: L
    start_time: .inf
    epochs:
      - start_size: 7952
        end_time: 8300.2
      - start_size: 9571
        end_time: 0