| 年份 | 自然增长率 |
|---|---|
| 2025 | — |
| 2024 | — |
| 2023 | — |
| 2022 | — |
| 2021 | — |
| 2020 | — |
| 2019 | 6.87 |
| 2018 | 0.62 |
| 2017 | 0.58 |
| 2016 | 0.56 |
| 2015 | 0.65 |
| 2014 | 0.65 |
| 2013 | 0.62 |
| 2012 | 0.63 |
| 2011 | 0.63 |
| 2010 | 0.64 |
| 2009 | 0.63 |
| 2008 | 0.59 |
| 2007 | 0.6 |
| 2006 | 0.52 |
| 2005 | 0.64 |
| 2004 | 0.64 |
| 2003 | 0.64 |
| 2002 | 0.68 |
| 2001 | 0.71 |
| 2000 | 4.37 |
| 1999 | — |