Table 1.  Percentage Changes in the TSIs due to Revisions in the Source Data,,,
Date,Freight,Passenger,Combined
Dec-06,1.33,-0.68,0.67
Nov-06,1.33,-0.51,0.72
Oct-06,1.30,-0.63,0.67
Sep-06,1.32,-0.64,0.68
Aug-06,1.34,-0.59,0.71
Jul-06,1.29,-0.84,0.48
Jun-06,1.46,-0.30,0.75
May-06,1.48,-0.29,0.77
Apr-06,1.02,-0.55,0.39
Mar-06,0.61,0.54,0.56
Feb-06,0.38,0.53,0.41
Jan-06,0.00,0.71,0.24
Dec-05,0.24,-0.40,0.05
Nov-05,0.20,-0.13,0.10
Oct-05,0.24,-1.16,-0.15
Sep-05,0.05,-0.35,-0.07
Aug-05,0.32,-0.24,0.15
Jul-05,-0.23,-1.25,-0.52
Jun-05,-0.27,-0.46,-0.33
May-05,-0.52,-0.49,-0.51
Apr-05,-0.41,-0.53,-0.45
Mar-05,-0.50,-0.92,-0.63
Feb-05,-0.31,-0.87,-0.48
Jan-05,-0.06,-1.13,-0.37
Summary January 2005-December 2006,,,
Average,0.48,-0.47,0.16
Minimum,-0.52,-1.25,-0.63
  Date of Min,May-05,Jul-05,Mar-05
Maximum,1.48,0.71,0.77
  Date of Max,May-06,Jan-06,May-06
Summary of Prior Years:,,,
January 2002-December 2004,,,
Average,-0.10,-0.15,-0.12
Minimum,-0.63,-0.74,-0.49
  Date of Min,Sep-04,Apr-02,Sep-04
Maximum,0.01,0.89,0.20
  Date of Max,Aug-04,Sep-02,Sep-02
January 1990-December 2001,,,
Average,-0.01,-0.13,-0.04
Minimum,-0.73,-1.17,-0.62
  Date of Min,Mar-91,Apr-00,Mar-91
Maximum,0.11,1.18,0.38
  Date of Max,Mar-01,Nov-00,Nov-00
Source: Bureau of Transportation Statistics,,,