单位:万人
                时间范围:2006 - 2021
                数据来源:住房和城乡建设部
            | 序号 | 时间(年) | 数据(万人) | 
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | 17.32 | 
| 7 | 2015 | 10.57 | 
| 8 | 2014 | 18.20 | 
| 9 | 2013 | 15.49 | 
| 10 | 2012 | 9.39 | 
| 11 | 2011 | 9.39 | 
| 12 | 2010 | 8.00 | 
| 13 | 2009 | 0.30 | 
| 14 | 2008 | 1.20 | 
| 15 | 2007 | 1.20 | 
| 16 | 2006 | 1.20 | 
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