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 | Enrollment | Nickname | Joined | Left | Current Conference |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Berry College | Mount Berry, Georgia | 1902.0 | Private | 1937.0 | Vikings | 1996.0 | 2004.0 | SAA (NCAA Division III) |
| Birmingham–Southern College | Birmingham, Alabama | 1856.0 | Private | 1400.0 | Panthers | 1996.0 | 2001.0 | SAA (NCAA Division III) |
| Lipscomb University | Nashville, Tennessee | 1891.0 | Private | 4278.0 | Bisons | 1996.0 | 2001.0 | Atlantic Sun (A-Sun) (NCAA Division I) |
| Lee University | Cleveland, Tennessee | 1918.0 | Private | 4954.0 | Flames | 1996.0 | 2004.0 | SSAC , Gulf South in 2013. |
| Trevecca Nazarene University | Nashville, Tennessee | 1901.0 | Private | 2345.0 | Trojans | 1996.0 | 2012.0 | G-MAC (NCAA Division II) |
| Union University | Jackson, Tennessee | 1823.0 | Private | 4259.0 | Union | 1996.0 | 2012.0 | Gulf South (GSC) (NCAA Division II) |
| Williams Baptist College | Walnut Ridge, Arkansas | 1941.0 | Private | 700.0 | Eagles | 1996.0 | 2001.0 | American Midwest |
| Lyon College | Batesville, Arkansas | 1872.0 | Private | 600.0 | Scots | 1997.0 | 2012.0 | American Midwest |
| Lambuth University | Jackson, Tennessee | 1843.0 | Private | 800.0 | Eagles | 2006.0 | 2009.0 | closed in 2011 |
Question:
what is the year union university was founded?
Answer:
1823.0