For banks located in U.S.-affiliated areas, level from quarterly Reports of Condition (forms FFIEC 031 and FFIEC 041), schedule RC-C Loans and Lease Financing Receivables, Loans secured by real estate (sum of series RCONF158, RCONF159, RCON1420, RCON1797, RCON5367, RCON5368, RCON1460, RCONF160, and RCONF161) less a market-to-book-value adjustment on loans that were reported at fair value (sum of series RCONF578, RCONF579, RCONF580, RCONF581, RCONF582, RCONF583, and RCONF584 less the sum of RCONF590, RCONF591, RCONF592, RCONF593, RCONF594, RCONF595, RCONF596) plus schedule RC-D Trading Assets and Liabilities, Unpaid principal balance of loans secured by real estate (sum of series RCONF625, RCONF626, RCONF627, RCONF628, RCONF629, RCONF630, and RCONF631); and for branches of U.S. banks located in U.S.-affiliated areas, year-end level from Foreign Branch Report of Condition (form FFIEC 030), Loans secured by real estate (series FORB1410). Unadjusted flow is the change in the level; data for the most recent ten years show no significant seasonality.