Two GPs share the record for being the deciding race for the F1 driver's title 11 times; can you name them?

To clarify: the drivers title has been decided at each of these two GPs on 11 occasions...

This took me half an hour of work, so it had better be correct!

Italy and Japan. Italy for the last time in 1979, Japan for the first time in 1976.

Just shows how the F1 calendar has changed over the years.

Sorry BOOBOO!

I can only think of Japan, i really ant got a clue which other one would come close never mind be on par with it.
I'll be sure to keep my eye out for the results of this one tho.
Crackin' question!
B*gg*r it rosbif...thought I had 10pts in the bag. Glad I checked the answers already posted before I typed all the stats.

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