Un siècle d'histoire coopérative à travers les statistiques de L'A.C.I.

Many authors have studied the quantitative evolution of the cooperative movement but their analysis was generally limited to a sector, a region or a specific period of time. Thanks to a collection by A. Leclerc (Moncton University, Canada) of all statistical information in possession of the International Cooperative Alliance, this study can rely on an exceptional database relating to the number of members affiliated to ICA since 1896. On the basis of this inventory, the authors try to determine the main orientations of the cooperative membership evolution over a period of nearly a century. In this article most of the results are presented by splitting the studied period into four development phases of the worldwide cooperative movement.