1993 1994 1995 1996
Less than $10,000 12.4 16.9 7.5 7.1
(12.1, 12.7) (16.4, 17.3) (7.2, 7.9) (6.9, 7.4)
$10,000 to less than $15,000 10.1 8.8 6.7 6.8
(9.8, 10.4) (8.5, 9.1) (6.5, 7.0) (6.6, 7.1)
$15,000 to less than $20,000 9.5 8.8 9.2 9.5
(9.2, 9.8) (8.6, 9.1) (8.9, 9.5) (9.2, 9.8)
$20,000 to less than $25,000 10.2 9.9 12.7 11.3
(9.9, 10.5) (9.6, 10.2) (12.3, 13.0) (11.1, 11.6)
$25,000 to less than $35,000 16.9 15.3 18.1 17.8
(16.5, 17.2) (14.9, 15.7) (17.7, 18.5) (17.4, 18.1)
$35,000 to less than $50,000 18.3 17.3 19.4 20.0
(17.9, 18.7) (16.9, 17.7) (19.0, 19.9) (19.6, 20.3)
Over $50,000 22.7 23.1 26.4 27.5
(22.3, 23.2) (22.7, 23.6) (25.9, 26.9) (27.1, 27.9)