The H.15 historical data is available through the Data Download Program at: http://www.federalreserve.gov/datadownload/Build.aspx?rel=H15 This series, H15/H15/RIMLPAAAR_N.WF, is available at: http://www.federalreserve.gov/datadownload/Output.aspx?rel=H15&series=3778859587549df66122f55fa29d6268&lastObs=&from=&to=&filetype=csv&label=include&layout=seriescolumn