freeswitch=> select cnt, count(*) from (select company_id, count(*) cnt from lines group by company_id) q1 group by cnt order by cnt desc;
 cnt | count 
-----+-------
  42 |     1
  40 |     1
  38 |     1
  36 |     1
  27 |     1
  24 |     2
  23 |     1
  22 |     1
  21 |     2
  20 |     2
  19 |     1
  18 |     1
  16 |     2
  15 |     2
  13 |     1
  12 |     1
  11 |     2
  10 |     9
   9 |     7
   8 |    19
   7 |    10
   6 |    17
   5 |    15
   4 |    49
   3 |    55
   2 |   147
   1 |   248
(27 rows)