United Parcel Service provides parcel delivery services around the world. The following table shows the various revenue sources for the comparative years ended December 31, 2004 and 2003:...

United Parcel Service provides parcel delivery services around the world. The following table shows the various revenue sources for the comparative years ended December 31, 2004 and 2003: 2004 2003 Revenue (in millions): U.S. domestic package: Next Day Air $ 6,040 $ 5,580 Two-to-Three Day Air 3,161 2,982 Ground 17,409 16,460 Total U.S. domestic package $26,610 $25,022 International package: Domestic $ 1,346 $ 1,134 Export 4,944 4,001 Cargo 472 426 Total international package $ 6,762 $ 5,561 Non-package: UPS Supply Chain Solutions (consulting services) $ 2,346 $ 2,126 Other 864 776 Total non-package $ 3,210 $ 2,902 Total $36,582 $33,485 1. Provide a horizontal analysis of UPS revenues. 2. Why is the total percentage change not equal to the sum of the percentage changes for each of the major subcategories (U.S. domestic, international, and non-package)? 3. Interpret the horizontal analysis