Unable to observe skew data, what am i doing wrong ?

[archit-rastogi]

Steps:

mkdir -p data $$ cd data && ../dbgen -f -v -k -s 1 -b ../dists.dss
# load data into all tables
# using copy <table_name> from syntax

But when i try to inspect, for example c-n join, i observe equal distribution of customers.
I expect in each of 5 regions, one nation to have 18% while remaining 4 nations to get 0.4 % of total customers.

fyi:

select n_nationkey, n_regionkey, count(c_custkey) from customer join nation on nation.n_nationkey = customer.c_nationkey group by n_regionkey, n_nationkey  order by n_regionkey;;
 n_nationkey | n_regionkey | count 
-------------+-------------+-------
           5 |           0 |  5952
          16 |           0 |  5974
          15 |           0 |  5921
          14 |           0 |  5992
           0 |           0 |  5925
          24 |           1 |  5983
           1 |           1 |  5975
           2 |           1 |  5999
           3 |           1 |  6020
          17 |           1 |  5975
          21 |           2 |  6008
           9 |           2 |  6161
          12 |           2 |  5948
          18 |           2 |  6024
           8 |           2 |  6042
          19 |           3 |  6100
          22 |           3 |  6078
          23 |           3 |  6011
           7 |           3 |  5908
           6 |           3 |  6100
           4 |           4 |  5995
          11 |           4 |  5963
          13 |           4 |  6033
          10 |           4 |  6009
          20 |           4 |  5904

Would be great if you point out what i am missing ?