Title: Ratio of Net Railroad Operating Income to Total Operating Revenues, Class I Railroads for United States Series ID: M09047USM156NNBR Source: National Bureau of Economic Research Release: NBER Macrohistory Database (Not a Press Release) Seasonal Adjustment: Not Seasonally Adjusted Frequency: Monthly Units: Percentage Date Range: 1917-01-01 to 1942-12-01 Last Updated: 2012-08-17 3:05 PM CDT Notes: These Data Were Computed By NBER From Figures Given In The Sources. Switching And Terminal Companies Are Included For 1917-1931. Source: Interstate Commerce Commission"Operating Revenues And Expenses Of Large Steam Roads In The U.S.: July, 1914 To December, 1919" For 1917-1919 Data; "Operating Revenues And Operating Expenses Of Class I Steam Railways In The U.S." For 1920-1942 Data (See Note Below). This NBER data series m09047 appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html. NBER Indicator: m09047 DATE VALUE 1917-01-01 22.3 1917-02-01 15.7 1917-03-01 22.2 1917-04-01 23.3 1917-05-01 26.8 1917-06-01 27.2 1917-07-01 26.6 1917-08-01 27.7 1917-09-01 26.5 1917-10-01 26.8 1917-11-01 21.5 1917-12-01 19.2 1918-01-01 -1.4 1918-02-01 4.1 1918-03-01 17.1 1918-04-01 19.2 1918-05-01 19.3 1918-06-01 -15.5 1918-07-01 29.4 1918-08-01 25.4 1918-09-01 20.3 1918-10-01 17.8 1918-11-01 13.0 1918-12-01 6.2 1919-01-01 4.7 1919-02-01 2.9 1919-03-01 2.9 1919-04-01 6.7 1919-05-01 9.5 1919-06-01 12.3 1919-07-01 17.0 1919-08-01 19.6 1919-09-01 15.6 1919-10-01 15.0 1919-11-01 5.0 1919-12-01 2.8 1920-01-01 11.9 1920-02-01 -4.0 1920-03-01 3.2 1920-04-01 -5.9 1920-05-01 -1.2 1920-06-01 -3.1 1920-07-01 -2.3 1920-08-01 -28.6 1920-09-01 12.9 1920-10-01 13.5 1920-11-01 8.6 1920-12-01 0.6 1921-01-01 0.3 1921-02-01 -1.3 1921-03-01 6.7 1921-04-01 6.9 1921-05-01 8.3 1921-06-01 11.1 1921-07-01 15.0 1921-08-01 17.8 1921-09-01 17.6 1921-10-01 19.7 1921-11-01 14.4 1921-12-01 11.7 1922-01-01 7.5 1922-02-01 11.9 1922-03-01 17.6 1922-04-01 12.0 1922-05-01 13.8 1922-06-01 16.1 1922-07-01 15.6 1922-08-01 11.0 1922-09-01 11.7 1922-10-01 15.5 1922-11-01 15.9 1922-12-01 15.4 1923-01-01 12.2 1923-02-01 8.8 1923-03-01 15.7 1923-04-01 16.0 1923-05-01 16.5 1923-06-01 16.3 1923-07-01 15.8 1923-08-01 17.5 1923-09-01 16.9 1923-10-01 17.7 1923-11-01 16.3 1923-12-01 14.2 1924-01-01 11.0 1924-02-01 14.9 1924-03-01 15.9 1924-04-01 13.1 1924-05-01 12.8 1924-06-01 14.1 1924-07-01 15.4 1924-08-01 18.8 1924-09-01 21.6 1924-10-01 22.2 1924-11-01 18.5 1924-12-01 17.2 1925-01-01 13.6 1925-02-01 14.3 1925-03-01 15.1 1925-04-01 14.0 1925-05-01 15.6 1925-06-01 18.2 1925-07-01 19.1 1925-08-01 22.5 1925-09-01 23.8 1925-10-01 23.3 1925-11-01 20.1 1925-12-01 18.0 1926-01-01 13.7 1926-02-01 13.8 1926-03-01 17.8 1926-04-01 15.2 1926-05-01 17.0 1926-06-01 19.8 1926-07-01 21.0 1926-08-01 22.9 1926-09-01 24.7 1926-10-01 24.0 1926-11-01 20.4 1926-12-01 15.2 1927-01-01 12.6 1927-02-01 14.8 1927-03-01 17.8 1927-04-01 14.7 1927-05-01 16.6 1927-06-01 17.0 1927-07-01 16.7 1927-08-01 21.3 1927-09-01 23.5 1927-10-01 23.1 1927-11-01 17.2 1927-12-01 11.6 1928-01-01 12.4 1928-02-01 15.3 1928-03-01 18.0 1928-04-01 14.9 1928-05-01 17.2 1928-06-01 17.1 1928-07-01 18.5 1928-08-01 23.0 1928-09-01 24.2 1928-10-01 26.8 1928-11-01 21.3 1928-12-01 19.1 1929-01-01 15.8 1929-02-01 17.8 1929-03-01 18.8 1929-04-01 18.3 1929-05-01 19.2 1929-06-01 19.9 1929-07-01 22.2 1929-08-01 24.1 1929-09-01 23.7 1929-10-01 25.1 1929-11-01 17.3 1929-12-01 15.3 1930-01-01 12.4 1930-02-01 13.9 1930-03-01 13.5 1930-04-01 13.8 1930-05-01 15.0 1930-06-01 15.6 1930-07-01 18.2 1930-08-01 20.6 1930-09-01 22.3 1930-10-01 23.2 1930-11-01 15.6 1930-12-01 13.0 1931-01-01 9.4 1931-02-01 8.2 1931-03-01 12.4 1931-04-01 10.7 1931-05-01 11.3 1931-06-01 13.7 1931-07-01 15.1 1931-08-01 15.5 1931-09-01 15.8 1931-10-01 17.7 1931-11-01 12.0 1931-12-01 9.6 1932-01-01 4.1 1932-02-01 8.2 1932-03-01 11.4 1932-04-01 7.7 1932-05-01 4.6 1932-06-01 5.1 1932-07-01 4.8 1932-08-01 11.2 1932-09-01 18.1 1932-10-01 21.3 1932-11-01 13.3 1932-12-01 13.3 1933-01-01 6.0 1933-02-01 4.8 1933-03-01 5.0 1933-04-01 8.6 1933-05-01 16.1 1933-06-01 21.5 1933-07-01 22.1 1933-08-01 20.7 1933-09-01 20.7 1933-10-01 19.5 1933-11-01 14.6 1933-12-01 15.4 1934-01-01 12.1 1934-02-01 11.8 1934-03-01 17.8 1934-04-01 12.2 1934-05-01 14.1 1934-06-01 14.9 1934-07-01 12.8 1934-08-01 14.4 1934-09-01 15.1 1934-10-01 16.8 1934-11-01 12.6 1934-12-01 15.2 1935-01-01 8.3 1935-02-01 10.3 1935-03-01 13.6 1935-04-01 12.6 1935-05-01 14.2 1935-06-01 12.1 1935-07-01 9.8 1935-08-01 14.4 1935-09-01 18.7 1935-10-01 22.1 1935-11-01 18.0 1935-12-01 15.5 1936-01-01 11.9 1936-02-01 11.2 1936-03-01 11.4 1936-04-01 13.2 1936-05-01 13.0 1936-06-01 15.2 1936-07-01 17.6 1936-08-01 18.4 1936-09-01 19.6 1936-10-01 22.9 1936-11-01 20.2 1936-12-01 18.9 1937-01-01 11.7 1937-02-01 12.1 1937-03-01 18.5 1937-04-01 13.8 1937-05-01 12.5 1937-06-01 16.9 1937-07-01 16.7 1937-08-01 14.1 1937-09-01 16.4 1937-10-01 16.3 1937-11-01 10.2 1937-12-01 8.7 1938-01-01 2.5 1938-02-01 -0.8 1938-03-01 5.2 1938-04-01 3.5 1938-05-01 6.1 1938-06-01 8.9 1938-07-01 12.8 1938-08-01 14.4 1938-09-01 15.6 1938-10-01 19.4 1938-11-01 15.6 1938-12-01 15.5 1939-01-01 10.8 1939-02-01 6.7 1939-03-01 10.9 1939-04-01 5.4 1939-05-01 8.3 1939-06-01 12.2 1939-07-01 14.7 1939-08-01 15.9 1939-09-01 22.7 1939-10-01 24.2 1939-11-01 19.1 1939-12-01 17.7 1940-01-01 13.3 1940-02-01 10.5 1940-03-01 11.3 1940-04-01 10.6 1940-05-01 13.8 1940-06-01 13.9 1940-07-01 15.8 1940-08-01 17.4 1940-09-01 19.5 1940-10-01 21.2 1940-11-01 19.1 1940-12-01 20.7 1941-01-01 16.4 1941-02-01 16.2 1941-03-01 19.3 1941-04-01 13.9 1941-05-01 20.0 1941-06-01 20.5 1941-07-01 21.9 1941-08-01 22.5 1941-09-01 21.3 1941-10-01 18.1 1941-11-01 15.1 1941-12-01 16.8 1942-01-01 14.4 1942-02-01 14.4 1942-03-01 17.1 1942-04-01 17.8 1942-05-01 18.2 1942-06-01 19.0 1942-07-01 20.0 1942-08-01 19.8 1942-09-01 22.2 1942-10-01 24.8 1942-11-01 21.6 1942-12-01 24.3