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 | Suburb/Town | Years | Founded | Website |
| --- | --- | --- | --- | --- |
| Vacy Public School | Vacy | K-6 | 1859.0 | website |
| Valentine Public School | Valentine | K-6 | 1958.0 | website |
| Valley View Public School | Wyoming | K-6 | 1980.0 | website |
| Vardys Road Public School | Seven Hills | K-6 | 1960.0 | website |
| Vaucluse Public School | Vaucluse | K-6 | 1858.0 | website |
| Verona School | Fairfield East | K-6 | 1882.0 | website |
| Villawood East Public School | Villawood | K-6 | 1955.0 | website |
| Villawood North Public School | Fairfield East | K-6 | 1953.0 | website |
| Vincentia High School | Vincentia | 7–12 | 1993.0 | website |
| Vincentia Public School | Vincentia | K-6 | 1992.0 | website |
| Vineyard Public School | Vineyard | K-6 | 1872.0 | website |
Question:
On average, when were vineyard schools founded?
Answer:
1872.0