It's not chart, answer is in fundamentals.
2004 market was expecting 'khichadi' sarkar. that's why it kept falling.
in 2009, (a) market was oversold, and (b) congress was about to get more seats without communist party support, communist parties were blocking all major deals/bills/reforms in previous 5 years.
2014, market was expecting stable govt
and now in 2019, again khichadi govt.