<prompt> Translate the following text to SwahiliA University of Chicago study found that this type of household declined from 45 percent to 26 percent of the total between 1972 and 1998.  <response>: Uchunguzi 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. 