using dbms_lock.sleep() Sleep in a pl / sql block

@test

I have this simple pl / sql block

set serveroutput on

set timing on

declare

  cursor kam is

    select upper(state_cd) st from zip_codes_us;

begin

   for i in kam loop

    dbms_output.put_line(i.st||' STATE');

    --dbms_lock.sleep(1);

   end loop;

end;

/

I saved this as test.sql and when I run this from sql plus using @test.sql, I get the following output

AK STATE

AL STATE

AR STATE

AR STATE

AZ STATE..... and so on

Now we need to put a pause / sleep after each state is displayed....

for example, display first record, i.e. AK STATE, then pause for 1 minute and then move on to display second record, i.e. "AL STATE" and then pause for 1 minute and so on