| 年份 | 自然增长率 |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2020 | |
| 2019 | |
| 2019 | 0.82 |
| 2018 | 0.19 |
| 2018 | 0.19 |
| 2017 | -0.98 |
| 2017 | -0.98 |
| 2016 | 0.19 |
| 2016 | 0.19 |
| 2015 | -0.18 |
| 2015 | -0.18 |
| 2014 | 0.23 |
| 2014 | 0.23 |
| 2013 | 0.19 |
| 2013 | 0.19 |
| 2012 | 0.25 |
| 2012 | 0.25 |
| 2011 | 0.20 |
| 2011 | 0.20 |
| 2010 | 0.14 |
| 2010 | 0.14 |
| 2009 | 0.43 |
| 2009 | 0.43 |
| 2008 | 0.45 |
| 2008 | 0.45 |
| 2007 | 0.21 |
| 2007 | 0.21 |
| 2006 | 0.38 |
| 2006 | 0.38 |
| 2005 | 0.21 |
| 2005 | 0.21 |
| 2004 | -0.01 |
| 2004 | -0.01 |
| 2003 | 0.28 |
| 2003 | 0.28 |
| 2002 | 0.39 |
| 2002 | 0.39 |
| 2001 | |
| 2001 | |
| 2000 | |
| 2000 | |
| 1999 |
