WASHINGTON (AP) — The World Bank is upgrading the outlook for global growth this year, predicting that COVID-19 vaccinations and massive government stimulus in rich countries will power the fastest worldwide expansion in nearly five decades. In its latest Global Economic Prospects report, the 189-country anti-poverty agency forecasts that the world economy will grow 5.6% this year, up from the 4.1% it forecast in January. The global economy last year shrank 3.5% as the coronavirus pandemic disrupted trade and forced businesses to close and people to stay home.