<prompt> Translate the following text to EnglishKwa bahati mbaya, katika muongo uliopita, mapato ya wastani ya makampuni ya sheria yenye mafanikio zaidi nchini yameongezeka kwa zaidi ya asilimia 50, wakati masaa ya bure yamepungua kwa theluthi moja.  <response>: Shamefully, over the last decade, the average revenue of the countrys most successful law firms has increased by more than 50 percent while pro- bono hours have dropped by one-third. 