Since the coup d'etat of March 18, 1970, all conditions for demographic and socioeconomic development in Kampuchea have been thoroughly disrupted. Favorable demographic trends had prevailed without interruption up to that time, but the following decade (1970-1980) was one of serious decline: war, revolution, and the Vietnamese invasion all affected the size, dynamism, and character of the Kampuchean population. Nonetheless, signs of demographic recovery became visible around 1981.