Settlement and population

As Table 10.2 makes clear, the Pacajes-Inka and Late Pacajes phases were times of very rapid growth on the Taraco Peninsula. During both phases the population of the peninsula grew at a rate much faster than the expected rate of natural increase. This suggests considerable immigration from other areas. If the peninsula experienced catastrophic depopulation with the collapse of the Tiwanaku state, then the arrival of the Inka state reversed the process.

Table 10.2: Late Horizon and Early Colonial: Metrics

	Pacajes-Inka	Late Pacajes
Number of sites	125	326
Phase population index	3676	5021
Annual population index growth rate	1.07	0.52
Occupation continuity index	40	57
Site founding index	75	79