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In Bolivia, a 62% majority of residents over the age of 15 self-identify as belonging to an indigenous people, while another 3.7% grew up with an indigenous mother tongue yet do not self-identify as indigenous. Including both of these categories, and children under 15, some 66.4% of Bolivia's population was registered as indigenous in the 2001 Census. The largest indigenous ethnic groups are: Quechua, about 2.5 million people; Aymara, 2.0 million; Chiquitano, 181,000; Guarani, 126,000; and Mojeno, 69,000. Some 124,000 belong to smaller indigenous groups. The Constitution of Bolivia, enacted in 2009, recognizes 36 cultures, each with its own language, as part of a plurinational state. Some groups, including CONAMAQ (the National Council of Ayllus and Markas of Qullasuyu) draw ethnic boundaries within the Quechua- and Aymara-speaking population, resulting in a total of fifty indigenous peoples native to Bolivia.

In the 2001 census, how much of Bolivia's population was labeled as being indigenous?
66.4%