8. Amortisation, depreciation and impairment costs €/000 43,029

Amortisation and depreciation for the period, divided by category, is shown below:

1st half of 2013 1st half of 2012 Change
In thousands of Euros
Property, plant and equipment:
Buildings 2,410 2,222 188
Plant and equipment 9,157 7,427 1,730
Industrial and commercial equipment 7,462 7,879 (417)
Other assets 916 916 0
Total depreciation of tangible fixed assets 19,945 18,444 1,501
1st half of 2013 1st half of 2012 Change
In thousands of Euros
Intangible assets
Development costs 12,311 11,152 1,159
Industrial patent rights and intellectual property rights 7,822 8,241 (419)
Concessions, licences, trademarks and similar rights 2,412 4,519 (2,107)
Other 539 380 159
Total amortisation of intangible fixed assets 23,084 24,292 (1,208)

The increase in depreciation of property, plant and equipment is due to the new Vespa production site in India and the engine production site in Vietnam, which went into operation in 2012.
The decrease in the amortisation of intangible assets, was due to the change in the useful life of the Aprilia and Moto Guzzi brands, as from 31 December 2012, which was offset by the transition in the period of development costs for some important new vehicles.
As set out in more detail in the paragraph on intangible assets, as from 1 January 2004, goodwill is no longer amortised, but tested annually for impairment.
As of 30 June 2013, the Group verified that EBIT indicated in the approved budget and in the impairment testing plan as of 31 December 2012 was reached for all CGUs, and the rates used are still valid. Therefore no impairment of goodwill occurred.