2017 growth forecast by 0.1 pct point to 1.4 pct (1.7 pct workday adjusted)
Ecb should start winding down its bond-buying programme 'as soon as possible'
Expect german inflation to jump to 2.2 pct this year from 0.5 pct in 2016
German growth helped by robust labour market, positive outlook for global economy, higher state spending and ecb's 'still extremely' expansionary monetary policy
Trump's protectionist stance poses threat to international trade system, global economy