Annex H: Scenarios and assumptions for the 2012-based principal and seven variant projections for Scotland
| Fertility | Life expectancy | Migration |
1 | Principal projection | Principal | Principal | Principal |
Standard 'single component' variants |
2 | High fertility | High | Principal | Principal |
3 | Low fertility | Low | Principal | Principal |
4 | High life expectancy | Principal | High | Principal |
5 | Low life expectancy | Principal | Low | Principal |
6 | High migration | Principal | Principal | High |
7 | Low migration | Principal | Principal | Low |
Special case scenario |
8 | Zero migration | Principal | Principal | Zero |
| Assumptions | Long-term Fertility (Total Fertility Rate - TFR) | Life Expectancy Males (2037) | Life Expectancy Females (2037) | Long-term Migration |
Standard variants | High variant | 1.95 | 84.2 | 87.4 | +24,000 |
Principal | 1.75 | 81.9 | 85.4 | +15,500 |
Low variant | 1.55 | 79.6 | 83.5 | +7,000 |
Special case scenario | Zero migration | 1.75 | 81.9 | 85.4 | 0 |