| Type of institution | 2013/2014 | 2014/2015 | 2015/2016 | 2016/2017 | 2017/2018 |
| Universities | 62% | 62% | 63% | 63% | 63% |
| Public universities | 62% | 63% | 62% | 63% | 63% |
| Private universities | 62% | 59% | 71% | 64% | 61% |
| Polytechnics | 48% | 48% | 50% | 48% | 48% |
| Public polytechnics | 51% | 50% | 53% | 51% | 50% |
| Private polytechnics | 38% | 41% | 41% | 40% | 43% |
| Colleges | 45% | 43% | 44% | 46% | 43% |
| Public colleges | 43% | 47% | 50% | 49% | 53% |
| Private colleges | 45% | 43% | 44% | 45% | 42% |
| TOTAL | 60% | 60% | 60% | 61% | 61% |
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