Notwithstanding, speaking on migration, the XII Census of the year 2000 only refers to the last five years, this is to say, the migrants who left their household between 1995 and 2000; because of this, it is possible that which has been pointed out by Canales 2005 is partially occurring, yet it is also possible that the household that declared not having migrants during the reference period had had them before 1995 so the census did not count them.
Sin embargo, al hablar de migración, el XII Censo del 2000 únicamente se refiere a los último cinco años, es decir, a los migrantes que salieron de su hogar entre 1995 y 2000; por ello es posible que en parte esté ocurriendo lo que ha señalado Canales 2005, pero también es posible que los hogares que declararon no tener migrantes durante la fecha de referencia los hayan tenido antes de 1995, por lo que el Censo no los está contabilizando.