1 1956-65, Department of Commerce, Survey of Current Business. 1966-76, NPN estimates. 2 Bureau of Census figures, 50 percent or more of dollar volume comes from sales and service, petroleum products.

1 Continental United States through 1958; Alaska and Hawaii included from 1959.

Source: Bureau of Public Roads and NPN estimates.

1 Bureau of Census Figures. By definition, 50 percent or more of dollar volume comes from sales and service, petroleum products.

Source: Based on data from Automobile Manufacturers Association, Bureau of Public Roads, Statistical Abstract of the United States, and NPN estimates.

SERVICE-STATION CENSUS BY STATES

Stations continue to grow in size but only slightly in number, according to Bureau of Census figures released last year based on a 1963 count. Though the station population-at 211,473-was up only 4,718 from 1958, the average station had increased its income from $69,000 to $84,000 during the five-year period. Equally significant were the figures for salaried stations, which omit the one-man outlet: the average station in 1963 had $99,000 in sales, compared to $84,000 in 1958.

1 By Census Bureau definition, only establishments earning 50 percent or more of their income from the sales and service of petroleum products are service stations.

NOTE.-For number of stations by company, see pp. 198-199.
Source: Bureau of Census, Retail Trade.

Senator BAYH. The next witness is Dr. Manfred Altman, director, Institute for Direct Energy Conversion, University of Pennsylvania. Dr. Altman, we are glad to have you with us.