Television’s popular sitcom Taarak Mehta Ka Ooltah Chashmah successfully completed 13 years today. Based on the column Duniye Ne Oondha Chashma written by columnist and journalist Taarak Mehta, the show is one of the longest-running soaps of the Indian television industry. The show enjoys a massive fanbase and has been entertaining audiences since July 28, 2008. Show's relatable storyline, unforgettable characters and knockabout humour has kept people hooked. As the show completes another milestone, let's stroll down memory lane and see how the characters have evolved.