| 年份 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
| 总人口数(万人) | 9708 | 9746 | 9808 | 9866 | 9973 | 10033 | 10077 | 10106 | 10165 | / |
| 参保人数(万人) | 4401.2 | 4512.8 | 4539.9 | 4534.3 | 4538.9 | 4530.6 | 4551.9 | 4560.3 | 4590.4 | 4614.1 |
| 参保率(%) | 45.3 | 46.3 | 46.3 | 46.0 | 45.5 | 45.2 | 45.2 | 45.1 | 45.2 | / |