<prompt> Translate the following text to SwahiliFrom fiscal year 1990 through fiscal year 1999, the number of nonpostal civilian federal employees fell from about 2.3 million to about 1.9 million.  <response>: Tangu mwaka wa 1990 hadi mwaka wa 1999, idadi ya wafanyakazi wa serikali wa kiraia waliofanya kazi za posta imepungua kutoka milioni 2.3 hadi milioni 1.9. 