I.-Before 20 April of the year of the renewal of the chambers, an order of the prefect of the region where the headquarters of the regional chamber of commerce and industry is located determines the number of members of this chamber and the number of seats allocated within it to the elected representatives of each of the territorial, local or departmental chambers of commerce and industry of Ile-de-France that are attached to it.
The number of members of the regional chamber of commerce and industry is determined on the basis of a proposal from the regional chamber of commerce and industry, taking into account the economic elements resulting from the study provided for in article R. 713-66.
II.-Within the regional chamber of commerce and industry, the distribution of seats allocated to each territorial, local or departmental chamber of commerce and industry in the Ile-de-France region is established on the basis of the average, rounded to the nearest unit, of the proportions represented by each of them within the whole, measured by the number of nationals, their business property tax bases and their number of employees. These proportions are based on the economic weighting study governed by article R. 713-66.
However, no territorial, local or departmental chamber of commerce and industry in the Ile-de-France region may have fewer than three seats, which must be allocated to representatives of each category.
The effects of this provision are reflected in the representation of the other chambers within the regional chamber of commerce and industry, following the rule of proportionality set out in the first paragraph.
III.-To take account of local particularities, the regional prefect may deviate, as regards the number of seats allocated to the different categories, from the average of the proportions defined in II above, within the limit of one tenth of the seats to be filled in each category and, where applicable, sub-category.
When applying the previous paragraph, the regional prefect shall inform the prefects of the departments concerned.
IV.-Within the Corsican regional chamber of commerce and industry, the same number of seats is allocated to each of the two territorial chambers of commerce and industry.
V.-The number of members of the local, Ile-de-France departmental and territorial chambers of commerce and industry, and their distribution between professional categories and, where applicable, sub-categories, is fixed under the same conditions.