The deme of R kept its population at 2512 until 6563.6 generations ago, when a exponential increase ensued until 2289.23, to size 8488. Subsequently, a linear change changed the numbers to 1852 individuals by 274.225. Starting from 274.225, the population has seen a growth from 1852 to 4689 at a exponential pace, continuing to this day.
time_units: generations
demes:
  - name: R
    start_time: .inf
    epochs:
      - start_size: 2512
        end_time: 6563.6
      - start_size: 2512
        end_size: 8488
        end_time: 2289.23
        size_function: exponential
      - start_size: 8488
        end_time: 274.225
        end_size: 1852
        size_function: linear
      - end_time: 0
        start_size: 1852
        end_size: 4689
        size_function: exponential