| 年份 | 美国 | 日本 | ||
|---|---|---|---|---|
| 森林面积(平方公里) | 占世界% | 森林面积(平方公里) | 占世界% | |
| 2020 | 310万 (3,097,950) | 7.6493% | 24.94万 (249,350) | 0.6157% |
| 2019 | 310万 (3,097,950) | 7.6401% | 24.94万 (249,350) | 0.6149% |
| 2018 | 310万 (3,097,950) | 7.6305% | 24.94万 (249,350) | 0.6142% |
| 2017 | 310万 (3,097,950) | 7.6214% | 24.94万 (249,350) | 0.6134% |
| 2016 | 310万 (3,100,950) | 7.6160% | 24.94万 (249,400) | 0.6125% |
| 2015 | 310万 (3,100,950) | 7.6099% | 24.94万 (249,440) | 0.6121% |
| 2014 | 310万 (3,098,200) | 7.5948% | 24.95万 (249,484) | 0.6116% |
| 2013 | 310万 (3,095,450) | 7.5797% | 24.95万 (249,528) | 0.6110% |
| 2012 | 309万 (3,092,700) | 7.5647% | 24.96万 (249,572) | 0.6104% |
| 2011 | 309万 (3,089,950) | 7.5496% | 24.96万 (249,616) | 0.6099% |
| 2010 | 309万 (3,087,200) | 7.5347% | 24.97万 (249,660) | 0.6093% |
| 2009 | 308万 (3,082,016) | 7.5125% | 24.96万 (249,570) | 0.6083% |
| 2008 | 308万 (3,076,832) | 7.4905% | 24.95万 (249,480) | 0.6074% |
| 2007 | 307万 (3,071,648) | 7.4684% | 24.94万 (249,390) | 0.6064% |
| 2006 | 307万 (3,066,464) | 7.4465% | 24.93万 (249,300) | 0.6054% |
| 2005 | 306万 (3,061,280) | 7.4305% | 24.92万 (249,210) | 0.6049% |
| 2004 | 306万 (3,056,096) | 7.4086% | 24.91万 (249,120) | 0.6039% |
| 2003 | 305万 (3,050,912) | 7.3867% | 24.90万 (249,030) | 0.6029% |
| 2002 | 305万 (3,045,728) | 7.3648% | 24.89万 (248,940) | 0.6020% |
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| 2001 | 304万 (3,040,544) | 7.3430% | 24.88万 (248,850) | 0.6010% |
| 2000 | 304万 (3,035,360) | 7.3213% | 24.88万 (248,760) | 0.6000% |
| 1999 | 303万 (3,034,274) | 7.3062% | 24.88万 (248,834) | 0.5992% |
| 1998 | 303万 (3,033,188) | 7.2898% | 24.89万 (248,908) | 0.5982% |
| 1997 | 303万 (3,032,102) | 7.2735% | 24.90万 (248,982) | 0.5973% |
| 1996 | 303万 (3,031,016) | 7.2572% | 24.91万 (249,056) | 0.5963% |
| 1995 | 303万 (3,029,930) | 7.2410% | 24.91万 (249,130) | 0.5954% |
| 1994 | 303万 (3,028,844) | 7.2248% | 24.92万 (249,204) | 0.5944% |
| 1993 | 303万 (3,027,758) | 7.2088% | 24.93万 (249,278) | 0.5935% |
| 1992 | 303万 (3,026,672) | 7.2005% | 24.94万 (249,352) | 0.5932% |
| 1991 | 303万 (3,025,586) | 9.0158% | 24.94万 (249,426) | 0.7433% |
| 1990 | 302万 (3,024,500) | 9.0044% | 24.95万 (249,500) | 0.7428% |