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 | Founded | Type | Joined | Nickname | Colors |
| --- | --- | --- | --- | --- | --- | --- |
| Boston University | Boston, MA | 1839.0 | Private | 1973.0 | Terriers | Scarlet & White |
| University of Connecticut | Storrs, CT | 1881.0 | Public | 1946.0 | Huskies | National Flag Blue & White |
| University of Delaware | Newark, DE | 1743.0 | Private and Public | 1986.0 | Fightin' Blue Hens | Royal Blue & Gold |
| College of the Holy Cross | Worcester, MA | 1843.0 | Private | 1971.0 | Crusaders | Purple & White |
| James Madison University | Harrisonburg, VA | 1908.0 | Public | 1993.0 | Dukes | Purple & Gold |
| University of Maine | Orono, ME | 1865.0 | Public | 1946.0 | Black Bears | Dark Blue & Light Blue |
| University of Massachusetts Amherst | Amherst, MA | 1863.0 | Public | 1946.0 | Aggies/Redmen/Minutemen | Maroon & White |
| University of New Hampshire | Durham, NH | 1866.0 | Public | 1946.0 | Wildcats | UNH Blue & White |
| Northeastern University | Boston, MA | 1898.0 | Private | 1993.0 | Huskies | Black & Red |
| University of Rhode Island | Kingston, RI | 1892.0 | Public | 1946.0 | Rams | Keaney blue, White, & Navy Blue |
| University of Richmond | Richmond, VA | 1830.0 | Private | 1986.0 | Spiders | UR Blue & UR Red |
| University of Vermont | Burlington, VT | 1791.0 | Public | 1946.0 | Catamounts | Green & Gold |
| Villanova University | Villanova, PA | 1842.0 | Private | 1988.0 | Wildcats | Blue & White |
| The College of William & Mary | Williamsburg, VA | 1693.0 | Public | 1993.0 | Tribe | Green & Gold |
Question:
When did Northeastern University join?
Answer:
1993.0