The vast majority of Bolivians are mestizo (with the indigenous component higher than the European one), although the government has not included the cultural self-identification "mestizo" in the November 2012 census. There are approximately three dozen native groups totaling approximately half of the Bolivian population – the largest proportion of indigenous people in the Americas. Exact numbers vary based on the wording of the ethnicity question and the available response choices. For example, the 2001 census did not provide the racial category "mestizo" as a response choice, resulting in a much higher proportion of respondents identifying themselves as belonging to one of the available indigenous ethnicity choices. Mestizos are distributed throughout the entire country and make up 26% of the Bolivian population, with the predominantly mestizo departments being Beni, Santa Cruz, and Tarija. Most people assume their ''mestizo'' identity while at the same time identifying themselves with one or more indigenous cultures. A 2018 estimate of racial classification put mestizo (mixed white and Amerindian) at 68%, indigenous at 20%, white at 5%, cholo at 2%, black at 1%, other at 4%, while 2% were unspecified; 44% attributed themselves to some indigenous group, predominantly the linguistic categories of Quechuas or Aymaras. White Bolivians comprised about 14% of the population in 2006, and are usually concentrated in the largest cities: La Paz, Santa Cruz de la Sierra and Cochabamba, but as well in some minor cities like Tarija and Sucre. The ancestry of whites and the white ancestry of mestizos lies within Europe and the Middle East, most notably Spain, Italy, Germany, Croatia, Lebanon and Syria. In the Santa Cruz Department, there are several dozen colonies of German-speaking Mennonites from Russia totaling around 40,000 inhabitants ().