| 年份 | 大专学历占比(%) | 本科学历占比(%) | 研究生学历占比(%) | 合计:大专及以上学历占比(%) |
| 2010 | 6 | 3.7 | 0.39 | 10.09 |
| 2011 | 7.6 | 4.9 | 0.44 | 12.94 |
| 2012 | 8 | 5.2 | 0.48 | 13.68 |
| 2013 | 8.5 | 5.5 | 0.51 | 14.51 |
| 2014 | 9.3 | 6.2 | 0.55 | 16.05 |
| 2015 | 9.2 | 7.5 | 0.7 | 17.4 |
| 2016 | 9.6 | 7.7 | 0.8 | 18.1 |
| 2017 | 9.4 | 8 | 0.8 | 18.2 |
| 2018 | 9.7 | 8.5 | 0.9 | 19.1 |
| 2019 | 12 | 9.7 | 1.1 | 22.8 |
| 2020 | 11.3 | 9.8 | 1.1 | 22.2 |