In the summer of 2019, ahead of the 17th Lok Sabha elections, the Narendra Modi government made an audacious announcement: it said India would become a $5trn economy in the next five years if it returned to power. This was a staggering claim. Because for this to come to fruition, the Indian economy would have to consistently grow at a compound annual growth rate (CAGR) of at least 8.5%, a feat few economies of comparable scale have ever achieved.