Historically, when has growth in the national debt been highest in the united states?

2017 has the greatest recorded national debt at approximately 20 Trillion US dollars.

Explanation:

The national debt is the debt of the public bore by the federal government.

The United States public debt has consistently risen up from 1990s to the present.

answer; taking detailed notes during the interview;

answer; interpreting someone's past consistent with present deviance;