| Platform Year | College-Type Terms | |||
| College | University | Higher Education | Total | |
| 1948 | 0 | 0 | 0 | 0 |
| 1952 | 0 | 0 | 0 | 0 |
| 1956 | 0 | 0 | 0 | 0 |
| 1960 | 1 | 0 | 2 | 3 |
| 1964 | 2 | 0 | 1 | 3 |
| 1968 | 2 | 0 | 1 | 3 |
| 1972 | 3 | 2 | 6 | 11 |
| 1976 | 4 | 0 | 2 | 6 |
| 1980 | 0 | 1 | 0 | 1 |
| 1984 | 2 | 1 | 2 | 5 |
| 1988 | 2 | 0 | 3 | 5 |
| 1992 | 6 | 0 | 1 | 7 |
| 1996 | 4 | 0 | 5 | 9 |
| 2000 | 2 | 0 | 5 | 7 |
| 2004 | 6 | 1 | 5 | 12 |
| 2008 | 7 | 0 | 12 | 19 |
| 2012 | 7 | 3 | 3 | 13 |
| 2016 | 7 | 1 | 4 | 12 |
| Total | 55 | 9 | 52 | 116 |