Data Through June 1961 Are Based On 25 Year Mortgages Prepaid In 12 Years; Data For July 1961-1965 Are Based On 30 Year Mortgages Prepaid In 15 Years. Source: U.S. Department Of Commerce, Business Condition Digest. This NBER data series m13045 appears on the NBER website in Chapter 13 at http://www.nber.org/databases/macrohistory/contents/chapter13.html. NBER Indicator: m13045

Source: Life Insurance Association Of America, Data For 1952-1963: Mimeographed Summary Table On "New Commitments Of Reporting Life Insurance Companies"; Data For 1964-1965: Monthly Tabulation Of "Forward Investment Commitments Of Life Insurance Companies" This NBER data series m10170 appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html. NBER Indicator: m10170

The Contributions to percent change in GDPNow: Real Gross Government Investment: Federal Government represents the contribution in percentage points that the nowcast for Gross Government Investment: Federal Government provides to real GDP growth. For further information visit the source at https://www.frbatlanta.org/cqer/research/gdpnow.aspx?panel=1.