Table B.—Alternative Rates of Return, Averages for 1958-91

[Percent]

NIPA based IEESA based
Current rent I Current rent II PDV 3% rate PDV 10% rate
Mining industries23.15.23.54.05.0
Total private capital16.114.914.114.414.8

NOTE.—In general, rates of return are some measure of income divided by some measure of capital stock. For the NIPA-based estimates, income is defined as property-type income (profits, rents, net interest plus indirect business taxes), and capital stock is defined as structures, equipment, and inventories. In the alternative IEESA methods, income is also defined as property-type income, but depletion is subtracted from profits, and the value of additions is added; IEESA capital stock is defined as structures, equipment, and inventories plus the value of mineral resources.

PDV Present discounted value