Table A2-21
First-Class Mail -- Total Envelopes by Sector
(Percentage of Pieces)
Postal Fiscal Years 1987, 2006 and 2007
(Diary Data)
Sector 1987 2006 2007
Household-to-household 9.4 6.4 4.6
Household-to-nonhousehold 12.3 13.9 15.1
Nonhousehold-to-household 39.2 46.9 41.2
Unidentified incoming 0.6 2.9 2.2
Unidentified outgoing 1.4 0.8 1.0
   Subtotal 62.9 71.0 64.1
Nonhousehold-to-nonhousehold 37.1 29.0 35.9
   Total 100.0 100.0 100.0
Note: Totals may not sum due to rounding.
Base: RPW Total, First-Class Envelopes.