| 年份 | 年平均人口(万人) |
|---|---|
| 2025 | — |
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | 271.9 |
| 2020 | 274.1 |
| 2019 | 276.1 |
| 2018 | 276.7 |
| 2017 | 97 |
| 2016 | 280 |
| 2015 | 280.39 |
| 2014 | 280.3 |
| 2013 | 280 |
| 2012 | 280.7 |
| 2011 | 281.5 |
| 2010 | 282.01 |
| 2009 | 281.3 |
| 2008 | 279.6 |
| 2007 | 277.2 |
| 2006 | 274.7 |
| 2005 | 273.3 |
| 2004 | 272.2 |
| 2003 | 271.2 |
| 2002 | 270.3 |
| 2001 | 269.2 |
| 2000 | 267.4 |