Manufacturing prices fell by 0.6 per cent in December, according to the latest Central Statistic Office figures.
This compares to a decrease of 0.9 per cent recorded for December of last year.
As a result, the annual percentage change showed a decrease of 1.8 per cent in December, compared to a decrease of 2.1 per cent in November.
Building and construction prices increased by 9.6 per cent over the year. The most notable yearly changes were increases in macadam and asphalt - which rose 17.1 per cent.
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The price of energy products increased by 4.8 per cent in the year since December 2005; petroleum fuels fell by 1.3 per cent.