Table 3 Fiscal value and depreciation for limited companies, by depreciation groups. 2008. NOK million

3 Fiscal value and depreciation for limited companies, by depreciation groups. 2008. NOK million
	Total	Office machines	Acquired goodwill	Trailers, trucks, vans etc.	Passenger cars, tractors, machinery and such	Ships etc.	Aircrafts and helicopters	Buildings and installations¹	Commercial buildings


Opening balance per 1 January 2008	741 289	14 287	22 055	17 949	150 388	61 337	5 193	228 273	241 807

+ Purchase price of investments	194 037	6 817	2 634	9 354	63 440	22 967	2 068	33 696	53 061
+ Improvements of existing assets	14 107	168	48	184	1 483	3 488	107	4 509	4 121
- Depreciation and write-down²	3 600	14	3	7	319	540	:	1 392	1 324
- Rest compensation by realisation³	49 476	363	1 857	2 910	9 941	19 797	1 103	5 266	8 239

Basis for this year's depreciation	896 355	20 894	22 877	24 570	205 051	67 454	6 264	259 821	289 424

Transferred to profit and loss account	13 919	.	1 289	.	.	8 210	257	1 811	2 352
- This year's depreciation	82 353	6 059	4 476	4 872	40 089	9 565	780	10 839	5 672

Closing balance by 31 December 2008	827 920	14 835	19 689	19 698	164 962	66 099	5 740	250 792	286 105

Number of forms in the sample	253 112	39 774	11 850	35 877	90 842	5 089	443	45 014	24 223

¹	Includes installations for transmission and distribution of electric power and electrotechnical equipment in power companies.
²	Includes downwritten value by separation of non-financial current assets, amount of downwriting with sales profit and government subsidies.
³	Includes compensation for realisation/value of turnover at withdrawal of non-financial current assets minus amount included in income 2008.