Japan’s core consumer inflation rose more than expected to a near eight-year peak in August, data showed on Tuesday, as heightened raw commodity costs and a depreciating yen continued to batter the economy with rising price pressures.

The national core consumer price index, which excludes the price of fresh food but includes energy, rose 2.8% in August, compared to a 2.4% rise in July, data from the Statistics Bureau showed. The figure also came above estimates for growth of 2.7%.Overall nationwide CPI rose 3% in August, more than July’s reading of 2.6%, and also at an eight-year high.

The reading marks the fifth straight month that inflation has trended above the Bank of Japan’s (BoJ) 2% annual target rate, and reflects continued headwinds for the world’s third-largest economy.

The trend comes as industries pass on heightened commodity costs onto customers. The cost of utilities such as electricity have also shot up this year due to the rising cost of coal and gas imports.