Change of U.S. combined TSI from previous years to 2011

The timeline shows the change of U.S. combined transportation services index from previous years to 2011 (September to September). The combined TSI from September 2011 was 8.9 percent higher than the combined TSI from September 2003.

Change of U.S. combined transportation services index from previous years to 2011*

Year	Change of combined TSI
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Release date

November 2011

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Region

United States

Survey time period

September 2001 to September 2011

Supplementary notes

The combined transportation services index (TSI) is a combination of the freight and the passenger TSI.
The freight TSI measures the month-to-month changes in freight shipments in ton-miles, which are then combined into one index. The index measures the output of the for-hire freight transportation industry and consists of data from for-hire trucking, rail, inland waterways, pipelines and air freight.
The passenger transportation services index measures the month-to-month changes in travel conducted in the for-hire passenger transportation sector. The index consists of data from air, local transit and intercity rail.
The TSI is seasonally adjusted and measures changes from the monthly average of the base year of 2000, i.e., monthly average of 2000 is TSI 100. More information on the TSI is available here.
* September to September. The percent changes to September 2011 are all preliminary.

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