Table 2. Average annual net change of growing-stock volume on timberland1
Category	1948	1966	1973	1983	1997
Gross growth	148,000	54,736	136,700	225,054	209,473
Mortality	(20,000)	(26,200)	(30,100)	(42,959)	(41,635)
Net growth	128,000	83,800	106,600	182,095	167,838
Removals	(54,736)	(48,346)	(35,406)	(57,019)	(93,554)
Net change	73,264	35,454	71,194	125,076	84,863
Values in parentheses are negative.