The Acadians were suspicious of outsiders and on occasion did not readily cooperate with census takers. The first reliable population figures for the area came with the census of 1671, which noted fewer than 450 people. By 1714, the Acadian population had expanded to 2,528 individuals, mostly from natural increase rather than immigration. Most Acadian women in the 18th century gave birth to living children an average of eleven times. Although these numbers are identical to those in Canada, 75% of Acadian children reached adulthood, many more than in other parts of New France. The isolation of the Acadian communities meant the people were not exposed to many of the imported epidemics, allowing the children to remain healthier.