(c)as nearly as may be one-third (including the member of offices reserved for women belonging to the Scheduled Castes, [the Scheduled Tribes and the backward class of citizens)] [Substituted vide Orissa Act No. 19 of 1995 w.e.f. 19.10.1995.] of the total number of offices of Chairperson in the Municipalities shall be reserved for women; and