<prompt> Translate the following text to EnglishUchunguzi wa Chuo Kikuu cha Chicago uligundua kuwa aina hii ya nyumba ilipungua kutoka asilimia 45 hadi asilimia 26 ya jumla kati ya 1972 na 1998.  <response>: A University of Chicago study found that this type of household declined from 45 percent to 26 percent of the total between 1972 and 1998. 