Weighted by total increases between 1960 and 1988, the population impact is 41 per cent. There is no finality about these methods or results. The subject is young, and fluid, and alternative approaches may emerge. What I hope they do show is the scope for developing detailed quantitative studies in which population, consumption and technology impacts on the environment can be assessed. This is the inverse of yield.
All figures are percentages.
The first five columns are the annual percentage change over the 1970-88 period. From fossil fuels and cement only. 31.1 31.3 Near East 7.0 2.9 1.8 2.2 42.2 26.2 31.6 Lat.