Figure 16: H-P filtered TSI, January 1979 to July 2005

Figure 16: H-P filtered TSI, January 1979 to July 2005

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Figure 16: H-P filtered TSI, January 1979 to July 2005. If you are a user with disability and cannot view this image, use the table version. If you need further assistance, call 800-853-1351.

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, http://www.bts.gov.