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a Beginning in 1998, the Federal Highway Administration (FHWA) used the Census Bureau's 1997 Vehicle Inventory and Use Survey (VIUS) for its baseline estimate of single-unit 2-axle 6-tire or more trucks. Prior to 1998, the FHWA used the Census Bureau's 1992 Transportation Inventory and Use Survey (TIUS) for its baseline estimates. Therefore, post-1997 data may not be comparable to 1997 and earlier years.
KEY: U = data are unavailable.
a 1960-1994 data include Motorcycles.
KEY: N = data do not exist.
a EIA's data collection does not produce enough survey coverage for local and municipal governments, private fleets, and household vehicles, EIA only publishes the fuel use and the number of vehicles for four fleets; federal government, state governments, transit agencies, and fuel providers. The total fuel used by these four types of fleets do not represent the U.S. total for AFV inventory and fuel use. These values should not be aggregated.
b A high-level ethanol blend containing 51%-83% ethanol...
KEY: R = revised.
a Defined as output per hour, based on the number of paid hours.
b Full-time and part-time employees are counted equally. Hence, these data do not reflect output per full-time equivalent employee.
KEY: R = revised.
a Wages do not include supplements to wages and salaries such as pension, profit-sharing, and other retirement plans, and health, life, and unemployment insurance compensation.
b Comprises business establishments involved in scenic and sightseeing transportation, support activities for transportation, postal service, and couriers and messengers.
KEY: R = revised.
a Wages do not include supplements to wages and salaries such as pension, profit-sharing, and other retirement plans, and health, life, and unemployment insurance compensation.
b Comprises business establishments involved in scenic and sightseeing transportation, support activities for transportation, and couriers and messengers.