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:
| Team | Coach | Home Ground | Location | Founded |
| --- | --- | --- | --- | --- |
| Adelaide Cobras | Kris Trajanovski | Weigall Oval | Plympton | 1972.0 |
| Adelaide Comets | Barney Smith | Santos Stadium | Mile End | 1994.0 |
| Adelaide Hills Hawks | Doug Paterson | Hawks Nest | Woodside | 1991.0 |
| Adelaide Olympic | Unknown | Thebarton Oval | Thebarton | 1978.0 |
| Cumberland United | Nick Pantsaras | A.A. Bailey Reserve | Clarence Gardens | 1943.0 |
| Enfield City Falcons | Unknown | Rushworth Reserve | Enfield | 1946.0 |
| Noarlunga United Bulldogs | Unknown | Wilfred Taylor Reserve | Noarlunga | 1963.0 |
| Playford City Patriots | Unknown | Ramsay Park | Elizabeth | 1956.0 |
| Port Adelaide Pirates | Derek Hall | John Hart Reserve | Port Adelaide | 1903.0 |
| White City Woodville | Adrian Santrac | Frank Mitchell Park | Woodville West | 1949.0 |
Question:
What is the average year that the club located in enfield was founded with an unknown coach?
Answer:
1946.0