| 年份 | 自然增长率 |
|---|---|
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | — |
| 2020 | — |
| 2019 | 1.2 |
| 2018 | 0.18 |
| 2017 | -0.94 |
| 2016 | 0.36 |
| 2015 | -0.24 |
| 2014 | -0.16 |
| 2013 | 0.29 |
| 2012 | 0.14 |
| 2011 | 0.43 |
| 2010 | 0.21 |
| 2009 | 0.43 |
| 2008 | 0.72 |
| 2007 | -0.55 |
| 2006 | 0.92 |
| 2005 | 0.15 |
| 2004 | 0.16 |
| 2003 | 0.22 |
| 2002 | 0.29 |
| 2001 | 0.17 |
| 2000 | 0.4 |
| 1999 | — |