While we started our survey with the objective to include as many countries as possible, our
primary aim was to include at least all the nations associated with the Club of Rome. In the
end, we managed to get enough answers from 28 of the 33 associated nations, which we
consider a good result. In total, we received answers from 57 countries. Naturally, it was
expected that there would be little data from small countries. Therefore, as we were
expecting, the geographical coverage of our study ended up somewhat distorted. Especially,
Africa, South America and Oceania are left relatively under-represented. Besides being
geographically inclined to be located in the northern hemisphere and particularly in Europe,
our countries tend to be economically developed. Further evidence of the somewhat unequal
distribution of the data provides the fact that 33% (19/57) of the countries received 75% of the
2213 answers. However, this follows the distribution of people (percentage of people in the
world).