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:
| Entrant | Constructor | Chassis | Engine | No | Driver |
| --- | --- | --- | --- | --- | --- |
| Team Ensign | Ensign | N180B | Cosworth DFV V8 | 3 | Jim Crawford |
| Team Ensign | Ensign | N180B | Cosworth DFV V8 | 4 | Joe Castellano |
| Colin Bennett Racing | McLaren | M29 | Cosworth DFV V8 | 6 | Arnold Glass |
| Colin Bennett Racing | March | 811 | Cosworth DFV V8 | 7 | Val Musetti |
| Team Sanada | Fittipaldi | F8 | Cosworth DFV V8 | 8 | Tony Trimmer |
| Warren Booth | Shadow | DN9 | Cosworth DFV V8 | 11 | Warren Booth |
| John Jordan | BRM | P207 | BRM 202 V12 | 12 | David Williams |
| Nick Mason | Tyrrell | 008 | Cosworth DFV V8 | 14 | John Brindley |
| EMKA Productions | Williams | FW07 | Cosworth DFV V8 | 16 | Steve O'Rourke |
| Team Peru | Williams | FW07 | Cosworth DFV V8 | 82 | Jorge Koechlin |
Question:
what is the total number of drivers listed?
Answer:
10