Proportion of land area covered by forest, percentage
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 11.3 | |
| 2000 | 11.2 | |
| 2005 | 11.4 | |
| 2010 | 11.5 |
Proportion of total water resources used, percentage
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 38.1 | 1 |
| 1995 | 38.8 | 2 |
| 2000 | 43.4 | 3 |
Footnotes:
- Year range 1988 - 1992
- Year range 1993 - 1997
- Year range 1998 - 2002
