Considered as a single site, Yanapata Baja grew quite rapidly in the Tiwanaku Period. Sector C has a population index of 429 (7.5 ha), and the site seems to have been unoccupied during the preceding LF2. This growth is perhaps even more impressive when Yanapata Baja is considered as part of the larger Yanapata group, together with T-130. Considered as a whole, the estimated population of the Yanapata group grew from 17 (a hamlet) to 630 during the Middle Horizon, an annual growth rate of 0.56%. Growth this rapid clearly indicates a population influx from outside the boundaries of the local community, and suggests some form of population resettlement programme on the part of the Tiwanaku state or its local representatives. Whatever the case, the Yanapata group was clearly one of the secondary sites of the Taraco Peninsula at this time, together with Chiripa (T-1).