Conversation so far:
what is the function of national economic and development authority
The National Economic and Development Authority is an independent cabinet-level agency of the Philippine government responsible for economic development and planning.
who directs the  National Economic and Development Authority agency
The present Director of the National Economic and Development Authority General and Socioeconomic Planning Secretary is Sec. Ernesto Pernia.
who appointed the director of  National Economic and Development Authority
Sec. Ernesto Pernia was appointed director of NEDA by president Rodrigo Duterte.

Question: when was the agency formed
Self-contained rewrite: when was the  National Economic and Development Authority agency formed