BERLIN (Reuters) -Germany's leading economic institutes have downgraded their forecast for 2024 and now see Europe's largest economy shrinking by 0.1%, people familiar with the figures from the autumn joint economic forecast told Reuters on Tuesday. Germany's economy was the weakest among its large euro zone peers last year with a 0.3% contraction. Inflation was expected to fall to 2.2% this year, from 5.9% last year, the sources said.