Table 4.1.—Value of the Resource, Additions, and Depletion of All Metals, Current Rent Method I (Rate of Return)

[Billions of current dollars]

Year Opening stock Additions Depletion Revaluation adjustment Closing stock (1+2-3+4)
(1) (2)(3)(4)(5)
195828.9-0.10.21.029.6
195929.60.2.529.8
196029.8-1.3.410.138.2
196138.21.3.4-.738.4
196238.42.4.4.540.9
196340.91.0.43.344.8
196444.82.3.54.150.7
196550.71.6.5.452.1
196652.11.5.61.254.3
196754.31.2.4-5.849.3
196849.31.2.51.551.6
196951.6-.1.75.356.1
197056.11.3.82.258.8
197158.81.5.6-5.354.3
197254.3.6.72.756.9
197356.9-.3.710.466.3
197466.31.8.74.772.1
197572.1-1.4.6.270.2
197670.20.810.780.2
197780.2.5.5-37.642.6
197842.6.3.47.249.7
197949.70.1-34.415.2
198015.2(*)(*)(*)(*)
1981(*)(*)(*)(*)(*)
1982(*)(*)(*)(*)(*)
1983(*)(*)(*)(*)(*)
1984(*)(*)(*)(*)(*)
1985(*)(*)(*)(*)(*)
1986(*)(*)(*)(*)(*)
1987(*)2.2.2(*)38.5
198838.54.81.047.990.1
198990.17.71.829.7125.6
1990125.68.62.310.1141.9
1991141.96.62.28.2154.5

* Indicates that the calculated value of the entry was negative, resulting from a negative resource rent. Because a negative resource rent is simply the mechanical result of treating resource rent as a residual after the deduction of other factor payments, the values have been replaced by asterisks. Where the resource rent was negative in the base year (1987) for individual mineral types, the average for the 3 year period, 1987-89, was substituted for the 1987 rent for the purpose of calculating constant-dollar estimates shown in tables B.1 through B.4. Where the 1987-89 average was negative, a base year price of zero was used for the constant-dollar estimates.

Table 4.2