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:
| School | Location | Mascot | # / County | Year joined | Previous conference | Year left | New conference |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Caston | Fulton | Comets | 25 Fulton | 1971.0 | Independents | 1978.0 | joined Midwest |
| Culver Community | Culver | Cavaliers | 50 Marshall | 1971.0 | Independents | 1976.0 | Independents |
| Triton | Bourbon | Trojans | 50 Marshall | 1971.0 | independent | 1980.0 | joined Northern State |
| Eastern (Greentown) | Greentown | Comets | 34 Howard | 1980.0 | Mid-Indiana | 1987.0 | joined Mid-Indiana |
| Oak Hill | Converse | Golden Eagles | 27 Grant | 1980.0 | Mid-Indiana | 2006.0 | joined Central Indiana |
Question:
What is the most current year with a previous conference of Mid-Indiana in Converse?
Answer:
1980.0