| 年份 | 年末在岗职工人数 | 年末退休人员 | 参保人数/万人 | ||
| 人数/万人 | 占比/% | 人数/万人 | 占比/% | ||
| 2011 | 937.9 | 69.88% | 404.2 | 30.12% | 1342.1 |
| 2012 | 954.5 | 69.37% | 421.5 | 30.63% | 1376.0 |
| 2013 | 955.7 | 68.55% | 438.4 | 31.45% | 1394.1 |
| 2014 | 967.6 | 68.10% | 453.2 | 31.90% | 1420.8 |
| 2015 | 980.5 | 67.79% | 465.9 | 32.21% | 1446.4 |
| 2016 | 991.6 | 67.52% | 477.0 | 32.48% | 1468.6 |
| 2017 | 1005.4 | 67.25% | 489.7 | 32.75% | 1495.1 |
| 2018 | 1020.6 | 67.00% | 502.7 | 33.00% | 1523.3 |
| 2019 | 1026.9 | 66.71% | 512.4 | 33.29% | 1539.3 |
| 2020 | 1064.2 | 67.05% | 523.0 | 32.95% | 1587.2 |
| 年均增长率 | 1.42% | 2.91% | 1.88 | ||