1. Source: United Nations, Measurement of National Income and the Construction of Social Accounts, 1947

3. Circular Flow of Income: Point of Departure Incorporating savings and investment Incorporating depreciation

4. Incorporating foreign trade and capital flows

5. Incorporating government

7. Source: United Nations, A System of National Accounts. 1968 The four accounts expressed in balance sheet form (T-account)

8. Source: United Nations, A System of National Accounts. 1968 The four accounts expressed in matrix form

12. Source: United Nations, A System of National Accounts and Supporting Documents. 1953

13. Ecuador input- output table, 1975

14. Simplified diagrammatic representation of principal SAM interrelationships. T 1.3 refers to matrix entry at intersection of row 1 and column 3 (‘ factors’ and ‘production activities’ respectively) in the following table.

15. A simplified Social Accounting Matrix

16. OECD, Measuring Productivity: measurement of aggregate and industry-level productivity growth. 2001