| 年份 | 自然增长率 |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2022 | |
| 2021 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | 0.73 |
| 2017 | 0.85 |
| 2016 | 0.65 |
| 2015 | 0.56 |
| 2014 | 0.59 |
| 2013 | 0.59 |
| 2012 | 0.53 |
| 2011 | 0.65 |
| 2010 | 0.54 |
| 2009 | 0.60 |
| 2008 | 0.57 |
| 2007 | 0.46 |
| 2006 | 0.53 |
| 2005 | 0.54 |
| 2004 | 0.60 |
| 2003 | 0.58 |
| 2002 | 0.60 |
| 2001 | 0.54 |
| 2000 | 0.54 |
| 1999 | |
| 1999 |
