After falling for seven straight months, the Case-Shiller U.S. National Home Price Index finally showed upticks in February and March. But according to economics research firm Capital Economics, the decline in the housing market is far from over. In their latest report, Capital Economics researchers point out that the increase in home prices in February and March was because of higher demand as a result of declining mortgage rates at the start of this year. But that will prove to be short-lived.