|Pos|No|Driver|Constructor|Laps|Time/Retired|Grid|Points|
|---|---|---|---|---|---|---|---|
|1|10|Juan Pablo Montoya|McLaren-Mercedes|60|1:24:29.588|3|10|
|2|5|Fernando Alonso|Renault|60|+2.739|1|8|
|3|9|Kimi Räikkönen|McLaren-Mercedes|60|+14.436|12 †|6|
|4|6|Giancarlo Fisichella|Renault|60|+17.914|6|5|
|5|3|Jenson Button|BAR-Honda|60|+40.264|2|4|
|6|1|Michael Schumacher|Ferrari|60|+1:15.322|9|3|
|7|2|Rubens Barrichello|Ferrari|60|+1:16.567|5|2|
|8|17|Ralf Schumacher|Toyota|60|+1:19.212|8|1|
|9|16|Jarno Trulli|Toyota|60|+1:20.851|4||
|10|12|Felipe Massa|Sauber-Petronas|59|+1 Lap|16||
|11|7|Mark Webber|Williams-BMW|59|+1 Lap|11||
|12|8|Nick Heidfeld|Williams-BMW|59|+1 Lap|14||
|13|14|David Coulthard|Red Bull-Cosworth|59|+1 Lap|13||
|14|11|Jacques Villeneuve|Sauber-Petronas|59|+1 Lap|10||
|15|15|Christian Klien|Red Bull-Cosworth|59|+1 Lap|15||
|16|4|Takuma Sato|BAR-Honda|58|+2 Laps|7||
|17|18|Tiago Monteiro|Jordan-Toyota|58|+2 Laps|20 ‡||
|18|21|Christijan Albers|Minardi-Cosworth|57|+3 Laps|18||
|19|20|Patrick Friesacher|Minardi-Cosworth|56|+4 Laps|19||
|Ret|19|Narain Karthikeyan|Jordan-Toyota|10|Electrical|17||

Question: what is the number of toyota's on the list?
Answer: 4