 More than a century would pass until the Mexican government conducted a new racial census in 1921 (some sources assert that the census of 1895 included a comprehensive racial classification; however, according to the historic archives of Mexico's National Institute of Statistics, that was not the case).While the 1921 census was the last time the Mexican government conducted a census that included a comprehensive racial classification, in recent years it has conducted nationwide surveys to quantify most of the ethnic groups who inhabit the country as well as the social dynamics and inequalities between them.Also known as the "Revillagigedo census" from the name of the Count who ordered that it be conducted, this census was the first nationwide population census of Mexico (then known as the Viceroyalty of New Spain).