The German economy will shrink more in 2020 than originally expected.And it will not pick up again until the end of 2021.The reason is the pandemic of the new coronavirus, which continues to damage Europe's largest economy.Leading German research institutes said this on Wednesday.In their annual autumn report, six German think tanks, including Ifo, DIW and RWI, predict that Germany's gross domestic product (GDP) will fall by 5.4 percent this year.This is a worse forecast than in April, when they expected a drop in GDP of 4.2 percent."Although much of the spring's economic downturn has already been offset, the remaining catching-up process is a more challenging path back to normal," said Stefan Kooths, head of economic research at IfW.