In 2007, the Japanese Foreign Trade Organisation JETRO helped 125 foreign companies to gain a foothold in Japan. That is 10 companies more than in the year before. The largest number came from Europe (48), followed by Asia/Pacific (40) and North America (34). In a press release the JETRO points out the tendency of newcomers to settle in areas other than Tokyo.

Reference:

http://www.jetro.go.jp/en/news/releases/20080526220-news