North Korea’s trade with China continued to run its deepest deficit in years throughout April and May, overall figures from China’ customs agency show, even as the government organization continues to withhold more detailed numbers.

A report from NK Pro published last week highlighted how China’s General Administration of Customs had apparently applied a blanket delay to its detailed trade statistics, with trade associations, journalists, and commodities traders all missing the data.

But Beijing’s customs agency has still published some limited figures showing overall imports and exports with China’s trading partners