Table A2-15 First-Class Mail Received -- by Number of Credit Cards Postal Fiscal Years 1987, 2006 and 2007 (Recruitment and Diary Data)
Number of Credit Cards	None			Low (1-3)			Medium (4-7)			High (8+)
	1987	2006	2007	1987	2006	2007	1987	2006	2007	1987	2006	2007
Pieces per Household per Week	4.8	5.8	6.2	7.3	8.3	8.3	9.9	10.8	10.1	13.2	12.8	12.3