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Table 9: Age class acreage by forest type for timberland, reserved, and other forest plots, (1977-2005), Minnesota

Paper birch forest type group

	Timberland			Reserved		Other forest
Age	1977	1990	2005	1990	2005	1990	2005
5	31,800	41,600	55,134	1,800	3,957	0	3,018
15	59,900	22,400	51,387	1,800	3,957	1,100	3,011
25	34,500	23,200	45,518	3,600	2,968	0	0
35	119,500	22,600	52,603	0	7,050	1,100	0
45	263,700	96,700	72,823	5,300	24,447	0	0
55	236,200	200,000	155,963	29,300	35,868	0	1,547
65	116,600	207,400	228,803	46,100	18,724	0	3,018
75	72,900	115,200	173,872	5,300	40,377	0	3,093
85	43,700	35,900	73,352	0	15,654	0	773
95	11,900	27,900	42,136	1,700	0	0	0
105	3,450	12,300	15,258	0	0	0	0
115	3,450	6,400	3,156	0	3,957	0	0
125	0	5,000	3,018	0	0	0	0
135	0	0	0	0	0	0	0
145	0	0	0	0	0	0	2,988
Total	997,600	816,600	973,024	94,900	156,959	2,200	17,449

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