Table A2-13 First-Class Mail Received -- by Number of Credit Cards Postal Fiscal Years 1987, 2007 and 2008 (Recruitment and Diary Data)															YEAR	A215COL	MEAN
															2007		9.362398
															2007	NONE	6.154269
															2007	LOW	8.26561
															2007	MEDIUM	10.12214
															2007	HIGH	12.27454
															2008		9.410083
Number of Credit Cards	None			Low (1-3)			Medium (4-7)			High (8+)					2008	NONE	5.744458
															2008	LOW	7.724075
	1987	2007	2008	1987	2007	2008	1987	2007	2008	1987	2007	2008			2008	MEDIUM	10.08952
															2008	HIGH	11.92664
Pieces per Household per Week	4.8	6.2	5.7	7.3	8.3	7.7	9.9	10.1	10.1	13.2	12.3	11.9