Jean-Baptiste Dutrou-Bornier bought up all of the island apart from the missionaries' area around Hanga Roa and moved a few hundred Rapa Nui to Tahiti to work for his backers. In 1871 the missionaries, having fallen out with Dutrou-Bornier, evacuated all but 171 Rapa Nui to the Gambier islands. Those who remained were mostly older men. Six years later, only 111 people lived on Easter Island, and only 36 of them had any offspring. From that point on, the island's population slowly recovered. But with over 97% of the population dead or gone in less than a decade, much of the island's cultural knowledge had been lost.