pre_text: 2. Fixed assets Accounting policies Shares in Group undertakings are stated at cost less any provision for impairment and capital related to share-based payments. Contributions in respect of share-based payments are recognised in line with the policy set out in note 7 “Share-based payments”. The Company assesses investments for impairment whenever events or changes in circumstances indicate that the carrying value of an investment may not be recoverable. If any such indication of impairment exists, the Company makes an estimate of the recoverable amount. If the recoverable amount of the cash-generating unit is less than the value of the investment, the investment is considered to be impaired and is written down to its recoverable amount. An impairment loss is recognised immediately in the income statement. Shares in Group undertakings
table: 2019 2018
table: €m €m
table: Cost:
table: 1 April 91,905 91,902
table: Capital contributions arising from share-based payments 137 130
table: Contributions received in relation to share-based payments (92) (127)
table: 31 March 91,950 91,905
table: Amounts provided for:
table: 1 April 8,177 7,911
table: Impairment losses – 266
table: 31 March 8,177 8,177
table: Net book value:
table: 31 March 83,773 83,728
question: Analyse this data from a financial earnings document. What is the 2019 average net book value as at 31 March ?