| Year | Refuges (ha) | National parks (ha) | Nature reserves (ha) | Natural landmarks (ha) |
|---|---|---|---|---|
| 2001 | 1179300 | 332800 | 80900 | 0 |
| 2002 | 1136900 | 334400 | 80900 | 16900 |
| 2003 | 1151000 | 334500 | 80900 | 16600 |
| 2004 | 1141100 | 397600 | 80900 | 15300 |
| 2005 | 1231400 | 400000 | 80900 | 16500 |
| 2006 | 1228700 | 400000 | 80900 | 16500 |
| 2007 | 1080300 | 400000 | 80900 | 16500 |
| 2008 | 1081100 | 400000 | 80900 | 13800 |
| 2009 | 1100500 | 400000 | 80900 | 14300 |
| 2010 | 1099800 | 400000 | 80900 | 14400 |
| 2011 | 1094400 | 400000 | 80900 | 16600 |
| 2012 | 1076800 | 390700 | 85200 | 17300 |
| 2013 | 1124200 | 390700 | 85200 | 15400 |
| 2014 | 1232000 | 390200 | 85200 | 15300 |
| 2015 | 1336200 | 390200 | 85200 | 14000 |
| 2016 | 1309200 | 390300 | 85200 | 14000 |
| 2017 | 1322600 | 389700 | 85200 | 14100 |