Model Variables:
1. life expectancy: 78 (US average 78.11)
2. birthrate: 2.0 / 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. 500)
Initial Population by Sex and Age

Size of Population over Time

Median Age of Population over Time

Sex Ratio of Population over Time
other
