China's consumer inflation rose 4.5 percent in December year on year, continuing on the previous month's trajectory but falling short of analysts' expectations of even higher surges.

The National Bureau of Statistics (NBS), which released the consumer price index (CPI) on Thursday, said the flattening inflation growth was a result of falling food prices, particularly pork prices.

Pork prices rose by 97 percent year on year in December, contributing to 2.34-percentage-point increase of the CPI, but slowing from the 110.2-percent growth in November, according to the NBS. 

The country's pork prices soared in 2019 due to a sweeping African swine fever. Thanks to the recovery of pig farm operations, growing imports of pork, and the government's releases of reserve pork, the prices have been recovering, the NBS said in a statement. 

The December CPI figure was below an analyst poll by Bloomberg, which forecast a 4.7-percent growth.

China's CPI in November surged by 4.5 percent year on year, the highest since January 2012.

For the whole year, the CPI rose by 2.9 percent year on year, within the government target of three percent. 

Producer prices fell at a slower pace

The producer price index (PPI), which measures costs for goods at the factory gate, dropped by 0.5 percent year on year in December, registering a slower pace of decline.

The price of production goods decreased by 1.2 percent year on year, resulting in a 0.87-percentage-point drop of the PPI.

The prices of mining industries rose by 2.6 percent year on year. The prices of raw materials industries fell by 2.6 percent, and those of processing industries dropped by 0.9 percent. 

Prices for ferrous metal mining and calendering rose by 8.8 percent in December, while that for non-ferrous metal mining and calendering increased by 1.1 percent year on year.

For the whole of 2019, PPI was down 0.3 percent, compared with a rise of 3.5 percent in the previous year.