The producer price index (PPI) fell 2.2% year-on-year in January, following a 2.5% decrease in December. Prices fell for the eleventh month in a row. Prices in the domestic market decreased 2.2% annually in January and those in the foreign market fell 3.4%. On a month-on-month basis, producer prices rose 0.9% in January, following a 1.0% increase in the previous month.