<prompt> Translate the following text to EnglishTangu 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.  <response>: From 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. 