Proportion of land area covered by forest, percentage
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 36.4 | |
| 2000 | 32.2 | |
| 2005 | 29.9 | |
| 2010 | 28.8 |
Proportion of total water resources used, percentage
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 18.5 | 1 |
| 2000 | 24.6 | 2 |
| 2005 | 24.5 | 3 |
Footnotes:
- Year range 1988 - 1992
- Year range 1998 - 2002
- Year range 2003 - 2007
