Investment properties

The main changes occurred in the period and the fair value of the properties used for own activity by the Parent Company and its subsidiaries to run the activity are shown in the table below.

(€ million) 31.12.2012 31.12.2011
Gross bookvalue as at 31 December previous year 14,879 14,330
Accumulated depreciation and impairment as at 31 December previous year -1,797 -1,716
Carrying amount as at 31 December previous year 13,082 12,614
Foreign currency translation effects 3 23
Increases 327 1,167
Capitalized expenses 90 65
Changes in consolidation scope -50 173
Reclassification 148 72
Decreases -442 -844
Depreciation of the period -177 -178
Net impairment loss of the period -81 -12
Carrying amount as at the end of the period 12,899 13,082
Accumulated amortization and impairment as at the end of the period 1,903 1,797
Gross bookvalue as at the end of the period 14,802 14,879
Fair value 18,209 18,590

The fair value of land and buildings (self used) at the end of the reporting period was mainly based on external appraisals.