[GENERAL] How can I replace the year of the created_at column with the current year dynamically ?

[Arup Rakshit]

Here is my try :

staging::=> select  to_char(created_at,'DD/MM') || '/' || to_char(now(),'YYYY') 
as when from users;
    when    
------------
 24/02/2014
 28/02/2014
 02/03/2014
 01/03/2014
 04/03/2014
 02/03/2014
 06/03/2014
 07/05/2014
 02/06/2014
 06/06/2014
 20/02/2014
 20/02/2014
 20/02/2014
 20/06/2014
 20/02/2014
(15 rows)

Can the same be done using any other clever trick ? 

Regards,
Arup Rakshit