| 年份 | 行政区域面积(平方公里 |
|---|---|
| 2025 | — |
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | — |
| 2020 | 991 |
| 2019 | 991 |
| 2018 | 991 |
| 2017 | 991 |
| 2016 | 1267 |
| 2015 | 992 |
| 2014 | 992 |
| 2013 | 992 |
| 2012 | 992 |
| 2011 | 1269 |
| 2010 | 992 |
| 2009 | 992 |
| 2008 | 992 |
| 2007 | 992 |
| 2006 | 992 |
| 2005 | 1269 |
| 2004 | 1269 |
| 2003 | 985 |
| 2002 | 985 |
| 2001 | 985 |
| 2000 | 985 |
| 1999 | 985 |