How many entries exist for each party's governments and each decade. This shows where the record is thin, so a quiet period reads as a gap in coverage, not as inactivity.
Programme to four-lane 5,846 km of national highway linking Delhi, Mumbai, Chennai and Kolkata, begun in 1999 and reported complete by the government in January 2012.
The Centre's scheme launched on 25 December 2000 funds all-weather road connections to unconnected habitations; government figures put phase I at 99.7% of sanctioned habitations built by July 2025.