Given the following hypothetical data (in millions of naira):
1. gross private domestic investment N59
2. contributors for social insurance N8
3. interest paid by customers N3
4. personal consumption expenditures N206
5. transfer payments N20
6. undistributed corporate profits N13
7. indirect business taxes N25
8. net exports of goods and services N4
9. capital consumption allowances N21
10. government purchase or goods and services N59
11. corporate income tax N22
12. personal taxes non-tax payments N29

Calculate
a) gross national product
b) net national product
c) national income
d) personal income
e) disposable income