China’s deflation pressures are likely to continue for at least another six months on weak demand and as the property crisis continues to sap confidence within the economy.

A measure of economy-wide prices called the gross domestic product deflator is expected to decline for at least two more quarters, according to 12 of 19 economists in a new Bloomberg survey. That gauge — which measures the difference between nominal and real GDP growth — has already fallen for the last three quarters, and a continued drop through June would mark the longest streak since 1999.