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.
The CBI is India's main central investigating agency under the DSPE Act, 1946; this entry sets out its legal basis, oversight, conviction rates, state consent withdrawals, court remarks and each side's stated position.
The Enforcement Directorate enforces FEMA, the PMLA and the Fugitive Economic Offenders Act; this entry sets out its legal basis, official case figures, court rulings, and what each side says about how its powers are used.
Act creating a national agency to investigate and prosecute scheduled terror and security offences, with Special Courts, enacted weeks after the November 2008 Mumbai attacks.