From 4/1/2011 to 3/31/2012, the yearly dosage at the boarder of Fukushima plant area is 956 mSv.
The Nuclear and Industrial Safety Agency answered to the question of Mr. Yoshii, Japanese Communist Party member of the House of Representatives.
It is excluding the initial dosage of March 2011, when the radiation level was the highest.
Source
Iori Mochizuki