Photos Census data for non-government controlled areas Half of the population in the Wa Self-Administered Division is aged 20 and below. The census workshop motivated Yex Ahng to advocate for more girls to attend school. Few people in the Wa Self-Administered Division have access to a toilet. The dependency ratio is high in Wa. For every 100 economically active people, there are 75 dependents. Census data is a positive driver for development in both jointly controlled and non-government controlled areas.