Hi ILoveTTATT, Have you thought about normalizing the increase in publishers from number of new publishers to a percentage increase in publishers (or a ratio of new publishers divided by number of publishers in the previous year for a country)? Assuming that the WTBTS's indoctrination methods are equally efficient from country to country, then the percentage of new publishers should not change from country to country, where as the number of new publishers will vary by how many publishers were in a country in the previous year.
Simon does have a valid point about using disposable income instead of average GPD. The following link shows disposable income for some countries: http://en.wikipedia.org/wiki/List_of_countries_by_per_capita_personal_income. Unfortunately, fewer countries are listed with disposable income than by using minimum wages by countries in the following link: http://en.wikipedia.org/wiki/List_of_minimum_wages_by_country, as I previously suggested that you use.
Peace be with you and everyone, who you love,
Robert