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 | Nickname | Location (all in Minnesota) | Founded | Type | Enrollment | Joined |
| --- | --- | --- | --- | --- | --- | --- |
| Augsburg College | Auggies | Minneapolis | 1869.0 | Private/Lutheran (ELCA) | 3785.0 | 1924 |
| Bethel University | Royals | Arden Hills | 1871.0 | Private/Baptist (BGC) | 5596.0 | 1977 |
| Carleton College | Knights | Northfield | 1866.0 | Private/Non-Sectarian | 1958.0 | 1920, 1983 3 |
| Concordia College | Cobbers | Moorhead | 1891.0 | Private/Lutheran (ELCA) | 2788.0 | 1921 |
| Gustavus Adolphus College | Gusties | St. Peter | 1862.0 | Private/Lutheran (ELCA) | 2600.0 | 1920 |
| Hamline University | Pipers | St. Paul | 1854.0 | Private/Methodist (UMC) | 4900.0 | 1920 |
| Macalester College | Scots | St. Paul | 1874.0 | Private/Non-Sectarian | 1996.0 | 1920 |
| College of Saint Benedict 1 | Blazers | St. Joseph | 1913.0 | Private/Catholic | 2049.0 | 1985 |
| St. Catherine University 1 | Wildcats | St. Paul | 1905.0 | Private/Catholic | 5246.0 | 1983 |
| Saint John's University 2 | Johnnies | Collegeville | 1857.0 | Private/Catholic | 1917.0 | 1920 |
| Saint Mary's University | Cardinals | Winona | 1912.0 | Private/Catholic | 7100.0 | 1926 |
| St. Olaf College | Oles | Northfield | 1874.0 | Private/Lutheran (ELCA) | 3007.0 | 1920, 1975 4 |
Question:
What was the earliest date an institution was founded that joined in 1977? 
Answer:
1871.0