BEIJING - China's producer price index (PPI), which measures costs for goods at the factory gate, rose 6.9 percent year on year in September, data showed on Monday.

The pace of PPI increase accelerated from 6.3 percent registered in August and surpassed market forecast of 6.4 percent. On a month-on-month basis, the index was up 1.0 percent last month, according to the National Bureau of Statistics.

For the first nine months of the year, PPI climbed 6.5 percent from one year earlier.