| 年份 | 美国 | |
|---|---|---|
| 森林面积(平方公里) | 占世界% | |
| 2020 | 310万 (3,097,950) | 7.6493% |
| 2019 | 310万 (3,097,950) | 7.6401% |
| 2018 | 310万 (3,097,950) | 7.6305% |
| 2017 | 310万 (3,097,950) | 7.6214% |
| 2016 | 310万 (3,100,950) | 7.6160% |
| 2015 | 310万 (3,100,950) | 7.6099% |
| 2014 | 310万 (3,098,200) | 7.5948% |
| 2013 | 310万 (3,095,450) | 7.5797% |
| 2012 | 309万 (3,092,700) | 7.5647% |
| 2011 | 309万 (3,089,950) | 7.5496% |
| 2010 | 309万 (3,087,200) | 7.5347% |
| 2009 | 308万 (3,082,016) | 7.5125% |
| 2008 | 308万 (3,076,832) | 7.4905% |
| 2007 | 307万 (3,071,648) | 7.4684% |
| 2006 | 307万 (3,066,464) | 7.4465% |
| 2005 | 306万 (3,061,280) | 7.4305% |
| 2004 | 306万 (3,056,096) | 7.4086% |
| 2003 | 305万 (3,050,912) | 7.3867% |
| 2002 | 305万 (3,045,728) | 7.3648% |
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| 2001 | 304万 (3,040,544) | 7.3430% |
| 2000 | 304万 (3,035,360) | 7.3213% |
| 1999 | 303万 (3,034,274) | 7.3062% |
| 1998 | 303万 (3,033,188) | 7.2898% |
| 1997 | 303万 (3,032,102) | 7.2735% |
| 1996 | 303万 (3,031,016) | 7.2572% |
| 1995 | 303万 (3,029,930) | 7.2410% |
| 1994 | 303万 (3,028,844) | 7.2248% |
| 1993 | 303万 (3,027,758) | 7.2088% |
| 1992 | 303万 (3,026,672) | 7.2005% |
| 1991 | 303万 (3,025,586) | 9.0158% |
| 1990 | 302万 (3,024,500) | 9.0044% |