between 500 and 600 million barrels annually; so it can be estimated that the crude oil in Indonesia will be exhausted in around the year of 2010. Meanwhile, the reserve of natural gas during 1990 to 1995 is generally increasing. At 1995, there is a reserve of 120.6 million MMCF. With this level of depletion at around 3000 thousands MMCF, it can be estimated that the reserve of natural gas will be available to be used farther for around forty years (Table 4). Physical account and monetary account for oil and gas are shown in Table 5 and Table 6.
Table 5 shows that the ending stocks of oil tend to decrease at the rate around five per cent per year during 1990 to 1995. The depletion rate of oil due to production in the same period is 0.6 per cent per year. The addition of reserve due to new discovery and upward adjustment in the same period are fluctuating and as the net change of the reserve, the price of oil per barrel rise around 2.3 per cent per year while the cost per unit for extracting oil tends to increase at the rate of 6.4 per cent per year. This will bring the profit per unit rise at the low rate, around 1.4 per cent per barrel.
Table 6 shows that the ending stock of gas in the average rises around 1.5 per cent per year during 1990 to 1995, while the rate of depletion increases around 6.9 per cent per year. The faster the depletion rate compared with the addition rate of reserve will reduce the time use of the resource. This will give early warning to the planner to formulate policy that relates to the utilization of those natural resources.
5.2. The SEEA
The influence of depletion of natural resources to the national account can be investigated from the information in the SEEA. Monetary data from natural resources can directly be taken from monetary accounts. Basic structure of the SEEA which is provided in the appendix is cited from the 1993 new SNA (Chapter 21 Part D, Table 7). In the diagram, the item of flow and stock of the SNA are shown in the shaded area. The columns of the table related to the flows are a column (1) for production, a column (2) for the rest of the world, and a column (3) for final consumption. The SNA column (4) asset balances of produced assets include the opening and closing stocks of produced assets and the elements
