<prompt> Translate the following text to EnglishKwa mfano, katika nchi za Marekani, asilimia 45 ya taarifa zote za biashara hazijashughulikiwa na majimbo saba California, Florida, Illinois, New York, Oklahoma, Pennsylvania, na Texas.  <response>: One frequently used basis is size of the problem: that is, 7 states account for about 45 percent of all unfiled returns California, Florida, Illinois, New York, Oklahoma, Pennsylvania, and Texas. 