number of blocks reads in FTS

Guys,
I am get confused with number of blocks read in FTS. The HWM is 58 blocks, but the FTS reads much, much more blocks. Why is that?

The sqlplus output:

SQL> analyze table klient compute statistics for table; SQL> select blocks from user_tables where table_name='KLIENT';

    BLOCKS

        58

SQL> set autotr on exp stat
SQL> select * from klient;
...

Plan wykonywania

   0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=14 Card=16384 Byte
          s=344064)

   1    0   TABLE ACCESS (FULL) OF 'KLIENT' (TABLE) (Cost=14 Card=1638
          4 Bytes=344064)

Statystyki

        158  recursive calls
          0  db block gets
       1171  consistent gets
          0  physical reads
          0  redo size
     514940  bytes sent via SQL*Net to client
      12524  bytes received via SQL*Net from client
       1094  SQL*Net roundtrips to/from client
          4  sorts (memory)
          0  sorts (disk)
      16384  rows processed