<prompt> Translate the following text to EnglishIngawa michango mingi ya GAO haiwezi kuhesabiwa kwa dola, zile ambazo zinaweza kuhesabiwa zinaonyesha kuwa GAO ilirudisha zaidi ya 57 kwa kila 1 iliyotengwa kwa shirika katika mwaka wa kifedha wa 1999.  <response>: While many of GAOs contributions cannot be quantified in dollar terms, those that can be quantified show that GAO returned over 57 for every 1 appropriated to the agency in fiscal year 1999. 