M+2 record

Mersenneplustwo project.
Here is a record of the number, and size, of new factors found, as well as an indication of the total effort, for each year since 2005:
2005 - 10 (largest 38-digits) - 4GHz-yrs
2006 - 3 (largest 19-digits) - 12GHz-yrs
2007[so far] - 2 (largest 23-digits) - 100GHz-yrs