WAEC Economics 1988 Theory question 103

Uses of national income figures (any well-explained points):
1. Measure economic growth: shows whether total output is rising or falling over time.
2. Measure standard of living: per capita income = national income ÷ population.
3. Compare countries' living standards and performance.
4. Economic planning: government uses the figures to set targets and plan.
5. Compare sectors: shows the contribution of agriculture, industry, services etc.
6. Show income distribution, guiding tax policy.
7. Guide investors on where and whether to invest.
8. Basis for international aid, loans and contributions to bodies like the UN and IMF.
9. Forecasting future trends in the economy.

Explain each use in a sentence; a bare list scores less.