Model Variables:

0. Initial Population: generated with size 1000
fertility, size, time,median age,sex ratio,males,females
2, 1000,10, 10.0, 99, 498, 502
fertility, size, time,median age,sex ratio,males,females
3, 1000, 10, 10.0, 94, 485, 515
1. life expectancy: 78
2. fertility: a) 2.0 and b) 3.0 / fertile female (maximum children per female)
3. fertility: if (sex == female AND fertility_minimum_age < age < fertility_maximum_age )
4. fertility_minimum_age = 25, fertility_maximum_age=30
5. begintime = 2009, endtime= begintime+n years (e.g. 250)

Fertility 2.0

Fertility 3.0