Table 15 Number of holdings with four-wheeled tractor and number of four-wheeled tractors by model year. Municipalities in county of Aust-Agder. 1989 and 1999

15	Number of holdings with four-wheeled tractor and number of four-wheeled tractors by model year. Municipalities in county of Aust-Agder. 1989 and 1999

	Number of holdings with four-wheeled tractor	Number of four-wheeled tractors ¹			Number of four-wheeled tractors by model year ¹

	Number of holdings with four-wheeled tractor	Total	With two wheel drive	With four wheel drive	'-1969	1970-1979	1980-1989	1990 or newer

1989	1 766	2 631	1 401	1 231	683	941	1 008	-
1999	1 193	2 105	865	1 237	321	581	730	468

0901 Risør	39	68	23	45	13	15	21	20
0904 Grimstad	188	370	192	177	53	119	121	76
0906 Arendal	184	344	186	156	55	107	106	73
0911 Gjerstad	59	93	29	64	9	17	43	25
0912 Vegårshei	46	73	29	45	16	15	32	11
0914 Tvedestrand	51	84	34	50	11	29	26	18
0919 Froland	89	142	54	88	20	37	51	34
0926 Lillesand	63	112	50	62	21	33	28	30
0928 Birkenes	100	156	45	111	14	48	54	40
0929 Åmli	66	134	38	97	23	27	49	36
0935 Iveland	28	53	19	34	:	:	21	11
0937 Evje og Hornnes	88	163	64	99	25	53	58	27
0938 Bygland	79	129	46	83	19	36	50	25
0940 Valle	93	158	54	104	32	31	62	33
0941 Bykle	20	27	4	23	:	:	11	11

¹	Not every tractor is specified with model year and two- or four wheel drive.