| 年份 | 自然增长率 |
|---|---|
| 2025 | — |
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | — |
| 2020 | — |
| 2019 | -4.62 |
| 2018 | -0.46 |
| 2017 | -1.37 |
| 2016 | -0.34 |
| 2015 | -0.22 |
| 2014 | -0.33 |
| 2013 | -0.29 |
| 2012 | -0.74 |
| 2011 | -0.37 |
| 2010 | -0.51 |
| 2009 | -0.33 |
| 2008 | -0.2 |
| 2007 | — |
| 2006 | -0.36 |
| 2005 | — |
| 2004 | — |
| 2003 | -0.43 |
| 2002 | -0.26 |
| 2001 | -0.25 |
| 2000 | -0.36 |
| 1999 | — |