the united states and china have been playing a mutually complementary role in generating global economic growth world economy entered 2005 with considerable momentum gained 2004 one of best years last three decades when grew by four per cent 5 1 purchasing power parity terms trade volume goods services 9 table e even though is expected to post deceleration 2006 both over all as well short term prospects remain generally positive continue act two major engines continued special feature strong overall was that improvement almost universal every region country except for india russia more rapidly than 2003 these exceptional cases rates slipped from high levels they nevertheless remained above seven widespread nature developing countries may be attrib uted fact