research: yearly GT-1 sales

[Greyout]

I am doing a bit of market research, and I am wondering if anyone has a reliable source for the following information:

What year did GT-1 release?
the anual sales of the title each year?

thanks.

 

[SportWagon]

I'm not sure detailed sales figures are required to be released by the entity (Sony) who may or may not even know them!

http://www.us.playstation.com/games.aspx?id=SCUS-94194
indicates the U.S. release date was late May or early June 1998.

 

[SportWagon]

http://www.granturismoworld.com/index_en_GB.html