- PPI Magazine is the source
- The Arab countries included in the research are only Tunisia,
Algeria, Morocco, Egypt, Iraq, and the United Arab Emirates.
- Population number of the Arab countries that are included in the
research is around 160 Million inhabitants.
- United States of America Population number: 285 Million inhabitants
- Canada Population number: 31 Million inhabitants.
- Europe Population number: 733 Million inhabitants.
As far as Europe is concerned, only the gross production has been
mentioned and not the total import since some import and export
operations are taking place between European countries.