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 | Enrollment | IHSAA Class | County | Year Joined | Previous Conference |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Decatur Central | Indianapolis, IN | Hawks | 1856.0 | AAAAA | 49 Marion | 2006.0 | Conference Indiana |
| Franklin | Franklin, IN | Grizzly Cubs | 1592.0 | AAAAA | 41 Johnson | 1981.0 | South Central |
| Greenwood | Greenwood, IN | Woodmen | 1389.0 | AAAA | 41 Johnson | 1942.0 | independent |
| Martinsville | Martinsville, IN | Artesians | 2012.0 | AAAAA | 55 Morgan | 2006.0 | Conference Indiana |
| Mooresville | Mooresville, IN | Pioneers | 1428.0 | AAAA | 55 Morgan | 1942.0 | independent |
| Plainfield | Plainfield, IN | Quakers | 1304.0 | AAAA | 32 Hendricks | 1942.0 | independent |
| Whiteland | Whiteland, IN | Warriors | 1785.0 | AAAAA | 41 Johnson | 1968.0 | Mid-Hoosier |
Question:
Name the lowest Year Joined which has a Mascot of pioneers?
Answer:
1942.0