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 | Size | IHSAA Class | County | Year Joined | Previous Conference |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Jac-Cen-Del | Osgood | Eagles | 296.0 | A | 69 Ripley | 1960.0 | none (new school) |
| Milan | Milan | Indians | 417.0 | AA | 69 Ripley | 1952.0 | Independents |
| Rising Sun | Rising Sun | Shiners | 312.0 | A | 58 Ohio | 1952.0 | Southeastern Indiana |
| Shawe Memorial | Madison | Hilltoppers | 93.0 | A | 39 Jefferson | 1984.0 | Independents |
| South Ripley | Versailles | Raiders | 414.0 | AA | 69 Ripley | 1966.0 | none (new school) |
| Southwestern (Hanover) * | Hanover | Rebels | 462.0 | AA | 39 Jefferson | 1960.0 | none (new school) |
| Switzerland County | Vevay | Pacers | 410.0 | AA | 78 Switzerland | 1968.0 | none (new school) |
Question:
How many years Joined have a Size smaller than 417, and an IHSAA Class of A, and a School of jac-cen-del?
Answer:
1.0