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

Black spruce forest type group

	Timberland			Reserved		Other forest
Age	1977	1990	2005	1990	2005	1990	2005
5	47,500	43,900	21,013	0	2,032	4,400	3,093
15	103,100	102,200	42,086	8,600	2,968	153,100	3,093
25	174,000	110,300	58,749	1,800	0	9,900	0
35	164,400	91,100	76,361	12,700	3,957	6,000	0
45	117,600	145,300	169,731	3,600	19,474	13,900	10,617
55	130,600	206,900	190,265	13,500	18,874	21,200	14,359
65	72,700	172,800	215,289	19,800	15,817	30,400	12,269
75	80,900	135,000	167,259	21,800	13,703	46,500	9,175
85	62,200	110,900	128,612	5,100	11,666	18,200	9,280
95	59,200	82,200	84,612	25,700	14,134	36,800	12,186
105	8,550	60,400	46,896	9,000	8,040	53,800	11,643
115	8,550	24,600	58,214	5,000	0	33,200	12,309
125	6,250	25,900	43,677	0	3,957	35,300	2,988
135	6,250	10,700	6,112	0	755	16,400	0
145	0	16,800	26,152	0	0	54,600	0
Total	1,041,800	1,339,000	1,335,027	126,600	115,376	533,700	101,013

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