Table A1-1 Total Domestic Mail Originating in Households and Nonhouseholds Postal Fiscal Years 1987, 2007 and 2008 (Diary Data)									_NAME_	COL1	COL2
									S1P	2.768385	2.948318
									S2P	6.717069	6.925553
									S3P	68.52099	70.19649
Sector	Percentage of Total Domestic Mail			Pieces Per Household Per Week					S4P	0.470209	0.686705
									S5P	1.28883	1.588099
	1987	2007	2008	1987	2007	2008			S6P	20.23451	17.65484
Household-to-household	4.8	2.8	2.9	1.6	1.0	1.0			S1M	50.17676	50.72652
Household-to-nonhousehold	6.4	6.7	6.9	2.1	2.3	2.3			S2M	121.7463	119.1558
Nonhousehold-to-household	55.5	68.5	70.2	18.5	23.9	23.2			S3M	1241.937	1207.748
Unknown incoming	0.3	0.5	0.7	0.1	0.2	0.2			S4M	8.522506	11.81492
Unknown outgoing	1.0	1.3	1.6	0.3	0.4	0.5			S5M	23.35993	27.32362
Total Household Mail	69.1	79.8	82.3	23.0	27.8	27.2
Nonhousehold-to-nonhousehold	30.9	20.2	17.7	-	-	-
Total	100.0	100.0	100.0	-	-	-