Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Institution | Location | Enrollment | Nickname | Varsity\nSports | Rugby\nSince | Head Coach |
| --- | --- | --- | --- | --- | --- | --- |
| Clemson University | Clemson, South Carolina | 20,576 | Tigers | 19 | 1967 | Justin Hickey |
| Maryland | College Park, Maryland | 37,641 | Terrapins | 20 | 1968 | Jeff Soeken |
| Navy | Annapolis, Maryland | 4,576 | Midshipmen | 30 | 1963 | Mike Flanagan |
| North Carolina | Chapel Hill, North Carolina | 29,340 | Tar Heels | 28 | 1966 | Pete Earsman |
| North Carolina State | Raleigh, North Carolina | 34,767 | Wolfpack | 25 | 1965 | Jim Latham |
| University of Virginia | Charlottesville, Virginia | 20,895 | Cavaliers | 25 | 1961 | Jon Roberts |
| Virginia Tech | Blacksburg, Virginia | 30,379 | Hokies | 21 | 1891 / 1968 | Andy Richards |
| Wake Forest | Winston-Salem, North Carolina | 7,079 | Demon Deacons | 18 | 1973 | Patrick Kane |
Question:
list each of institutions with an even enrollment
Answer:
3