Proportion of land area covered by forest, percentage
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 27.7 | |
| 2000 | 27.7 | |
| 2005 | 27.8 | |
| 2010 | 28.6 |
Proportion of total water resources used, percentage
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 9.6 | 1 |
| 1995 | 5.9 | 2 |
| 2000 | 4.6 | 3 |
| 2005 | 4.3 | 4 |
Footnotes:
- Year range 1988 - 1992
- Year range 1993 - 1997
- Year range 1998 - 2002
- Year range 2003 - 2007
