I've personally met a number of Jews that have been convinced of the truth of Christ through the Book of Mormon, but I'd definitely agree that they are a fraction of a fraction of a fraction of the total number of Jews. :) 
 
My understanding is that the Church does not currently proselyte to Jews as a people. For example, the Book of Mormon is not publicly available in Hebrew and we do not send missionaries to Israel currently. 
 
See Luke 13 and 1 Nephi 13:42. The time will come when we do preach to them, but that time hasn't arrived yet.