Source: Life Insurance Association Of America, Data For 1952-1960 Are From Association Files; Data For 1961-1967 Are From The Monthly Release, "Forward Investment Of Commitments Of Life Insurance Companies" This NBER data series m10129 appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html. NBER Indicator: m10129