| 年份 | 常住人口数(万人) |
|---|---|
| 2025 | 19.77 |
| 2024 | — |
| 2023 | 19.65 |
| 2022 | — |
| 2021 | — |
| 2020 | 19.76 |
| 2019 | — |
| 2018 | 18.44 |
| 2017 | 18.43 |
| 2016 | 18.49 |
| 2015 | 18.63 |
| 2014 | 18.83 |
| 2013 | 19.06 |
| 2012 | 19.3 |
| 2011 | 19.03 |
| 2010 | 19.3 |
| 2009 | — |
| 2008 | 18.83 |
| 2007 | 18.91 |
| 2006 | 19.19 |
| 2005 | 19.21 |
| 2004 | — |
| 2003 | 19.59 |
| 2002 | — |
| 2001 | — |
| 2000 | — |
| 1999 | — |