SA5 Footnotes

1/ The estimates of earnings for 1958-74 are based on the 1967 Standard Industrial Classification (SIC). The estimates for 1975-87 are based on the 1972 SIC. The estimates for 1988-2001 are based on the 1987 SIC.
2/ Census Bureau midyear population estimate.
3/ Per capita personal income is total personal income divided by total midyear population.
4/ Employer contributions for government social insurance are included in earnings by industry and earnings by place of work, but they are excluded from net earnings by place of residence and personal income. Employee and self-employed contributions are subtractions in the calculation of net earnings by place of residence and all of the income measures.
5/ The adjustment for residence is the net inflow of the earnings of interarea commuters. For the United States, it consists of adjustments for border workers and US residents employed by international organizations and foreign embassies.
6/ Rental income of persons includes the capital consumption adjustment.
7/ Includes actual employer contributions and actuarially imputed employer contributions to reflect benefits accrued by defined benefit pension plan participants through service to employers in the current period.
8/ Proprietors' income includes the inventory valuation adjustment and the capital consumption adjustment.
9/ Under the 1972 SIC, ordnance was reclassified to four 2-digit industries: Fabricated metal products, electronic and other electric equipment, transportation equipment, and instruments and related products.
10/ Under the 1987 SIC, combined real estate, insurance, etc., was reclassified to four 2-digit industries: Nondepository credit institutions; insurance agents, brokers, and services; real estate; and legal services.
11/ Social services was first recognized under the 1972 SIC, so estimates for 1969-74 do not exist.
12/ Engineering and management services was first recognized under the 1987 SIC, so estimates for 1969-87 do not exist.
Note-- All dollar estimates are in current dollars (not adjusted for inflation).
(D) Not shown to avoid disclosure of confidential information, but the estimates for this item are included in the total.
(L) Less than $50,000, but the estimates for this item are included in the total.
(NA) Data not available for this year.
(NM) Not meaningful.
Last updated: September 30, 2015-- revised estimates for 1976-2001.