| Year | Bachelor’s degree | Postgraduate degree |
|---|---|---|
| 1960 | 2.5% | 2.6% |
| 1970 | 4.0% | 5.0% |
| 1980 | 7.0% | 8.7% |
| 1990 | 11.5% | 8.8% |
| 2000 | 13.7% | 10.3% |
| 2010 | 15.9% | 11.1% |
| 2013 | 16.4% | 11.9% |
| 2014 | 16.6% | 12.0% |
| 2015 | 17.1% | 12.6% |
| 2016 | 17.2% | 12.8% |
| 2017 | 17.8% | 13.4% |
- Report
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