<prompt> Translate the following text to EnglishFHWA ilitekeleza mbinu ya usawa ya kusimamia utendaji wa mtendaji wake wa juu katika kujibu uchunguzi wake wa kuridhika kwa wafanyikazi wa 1999.  <response>: FHWA implemented a balanced approach to managing its senior executive performance in response to its 1999 employee satisfaction survey. 