Until a shift occurred 7091.58 generations ago, deme K's population was consistently 5874. Since then, it decreased to 2415, a number that has remained unchanged to the current time.
time_units: generations
demes:
  - name: K
    start_time: .inf
    epochs:
      - start_size: 5874
        end_time: 7091.58
      - start_size: 2415
        end_time: 0