Two Federal Reserve Board economists – one of them Fed Chairman Alan Greenspan – this week released a long-awaited study that provides the first quasi-official estimate of annual mortgage origination volume since the government abandoned the effort in 1998. According to the Fed study, total 1-4 family mortgage originations hit their all-time peak in 2003 at $4.033 trillion – considerably higher than industry estimates had pegged production for that period. Relying heavily on Fed data… [One data table included]