| 年份 | 自然增长率 |
|---|---|
| 2025 | — |
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | — |
| 2020 | — |
| 2019 | — |
| 2018 | 0.38 |
| 2017 | -0.95 |
| 2016 | 0.22 |
| 2015 | 0.37 |
| 2014 | 0.02 |
| 2013 | 0.19 |
| 2012 | 0.19 |
| 2011 | 0.22 |
| 2010 | -0.06 |
| 2009 | -0.69 |
| 2008 | -0.69 |
| 2007 | -0.49 |
| 2006 | 0.08 |
| 2005 | 0.06 |
| 2004 | -0.26 |
| 2003 | 0.13 |
| 2002 | — |
| 2001 | — |
| 2000 | — |
| 1999 | — |