Manufacturing prices fell by 0.8 per cent in July, according to the latest Central Statistics Office data.
The annual percentage change showed a decrease of 2.6 per cent in July, compared with a decrease of 2.8 per cent in June.
The data shows the price of energy products increased by 6.5 per cent in the year since July 2007, while petroleum fuels increased by 40.1 per cent.
Building and construction material prices increased by 4.5 per cent in the year.
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In July 2008, there was a monthly increase in Energy products of 1.4 per cent, while petroleum fuels increased by 4.2 per cent.
The price of capital goods increased by 2.9 per cent over the year, while there was a monthly price increase of 0.2 per cent.