Hinata, used as the kanji "日向" is currently 206th place in Japan among males and "向日葵" (though the kanji "向日葵" could be used as Himawari) is currently 495th place among females, in terms of kanji (source: http://5go.biz/sei/cgi/ninki1.htm, http://5go.biz/sei/cgi/ninki2.htm).