.fp 1 H
.fp 2 HI
.fp 3 HM
.pl 14i
.po .25i
.ll 7i
.tr ~
.ps 24
.vs 43p
.sp 1i
.ce 3
.ft 3
KNOWN
.ft 1
but not
.ft 3
SHOWN
.ft 1
.sp 0.5i
.TS
center expand doublebox;
c s s s
c c8e | ce c
c c | n c.
Customers in Each Group
.sp 2i
=
~	Years	Number	~
.sp 0.15i
_
~	less than 1	11	~
~	1 to 2	17	~
~	3 to 5	26	~
~	6 to 10	35	~
~	11 to 15	29	~
~	over 15	368	~
.sp 0.25i
.TE
