The deme of G kept its population at 9324 until 7254.1222 generations ago, when a linear decrease ensued until 7158.5, to size 4953. Subsequently, a linear decrease changed the numbers to 2285 individuals by 3765.7. Starting from 3765.7, the population has seen a reduction from 2285 to 689 at a linear pace, continuing to this day.
time_units: generations
demes:
  - name: G
    start_time: .inf
    epochs:
      - start_size: 9324
        end_time: 7254.1222
      - start_size: 9324
        end_size: 4953
        end_time: 7158.5
        size_function: linear
      - start_size: 4953
        end_time: 3765.7
        end_size: 2285
        size_function: linear
      - end_time: 0
        start_size: 2285
        end_size: 689
        size_function: linear