The eurozone’s languishing economy is getting help from an unlikely quarter: Germany’s domestic demand.

A detailed breakdown of Germany’s gross domestic product in the fourth quarter of last year, released by the national statistics office on Tuesday, showed a strong spurt in investment and continued robust growth in consumer spending for the second consecutive quarter.

The pickup shows Germany’s economy, long criticized by international organizations for its heavy reliance on exports and its anemic domestic growth, is rebalancing itself under the influence of the European Central Bank’s cheap-money policy and other stimuli, including falling gasoline prices and rising wages.

Economists are optimistic that German consumer spending will remain strong.

“There are plenty of reasons for households to be bullish,” said Christian Schulz, an economist at Berenberg, noting Germans’ strong household income due to the country’s booming job market.