So far, 2005 has been a much more profitable year for thrift mortgage servicers than was the first half of 2004. Data from the Office of Thrift Supervision show that institutions regulated by the agency reported $629.2 million in net servicing income through the first six months of 2005. Almost half of that – $308.0 million – was piled up at the industry’s largest thrift, Washington Mutual. … [One data table included]