| 年份 | 年平均人口(万人) |
|---|---|
| 2025 | — |
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | 272.43 |
| 2020 | 56.05 |
| 2019 | 56.33 |
| 2018 | 275.21 |
| 2017 | 56.73 |
| 2016 | 278 |
| 2015 | 278.26 |
| 2014 | 280.7 |
| 2013 | 286.4 |
| 2012 | 291 |
| 2011 | 291.1 |
| 2010 | 289.19 |
| 2009 | 286.72 |
| 2008 | 283.2 |
| 2007 | 279.76 |
| 2006 | 277.84 |
| 2005 | — |
| 2004 | — |
| 2003 | 278.57 |
| 2002 | 276.69 |
| 2001 | 274.6 |
| 2000 | 272.78 |