The Thirty-Four-Year Drawdown

In December 1989, the Nikkei 225 stock index reached an intraday high of approximately thirty-eight thousand nine hundred. The level represented the cumulative outcome of forty years of post-war Japanese economic recovery, a roughly five-fold appreciation of Japanese equities over the preceding decade, and a particular cultural-economic confidence — within Japan and increasingly abroad — that the Japanese growth model represented a permanent shift in global economic leadership.

Over the following thirty-four years, the Nikkei did not return to that level. The index spent the 1990s in a slow decline, the 2000s in extended stagnation, and parts of the 2010s in a measured rebuild that was repeatedly interrupted by global shocks. Through 2024, the Nikkei finally returned to and modestly exceeded its 1989 high, completing what is, by any standard, the longest sustained equity market drawdown of any major developed economy in the post-war period.

The Bubble. The 1989 peak was the result of a particular kind of property-and-equity bubble. Japanese commercial real estate had been rising for two decades; the land under the Imperial Palace was, at peak, valued at more than all the real estate in California combined. Cross-shareholding arrangements between Japanese corporations had inflated the equity-market float in particular industries. Bank lending, denominated against rising property collateral, had created circular flows of credit that depended on continued asset appreciation. The arrangement was sustainable as long as prices kept rising. When prices stopped rising, the arrangement collapsed.

The Balance-Sheet Recession. What followed the 1989 peak was, in retrospect, what economist Richard Koo would later name a "balance-sheet recession" — a sustained period of corporate and household deleveraging in which economic agents prioritized debt reduction over consumption and investment, suppressing aggregate demand for an unusually long time. Japanese corporations took roughly twenty years to fully restore their balance sheets from the 1980s bubble. Through that period, monetary policy was repeatedly aggressive (the Bank of Japan reached zero interest rates a decade before the Federal Reserve did, and pioneered quantitative easing well before any other major central bank), but the additional liquidity did not translate into accelerated economic growth because corporate borrowers were not interested in new debt. They were paying down old debt.

The Lessons. The Japanese experience produced two enduring lessons for subsequent central banks. The first was that monetary policy alone cannot quickly resolve a balance-sheet recession; fiscal policy must do meaningful work. The second was that the political-economic cost of allowing a debt bubble to fully deflate is enormous, persisting over decades and shifting the long-term growth trajectory of an entire economy.

Both lessons were reflected, with varying degrees of urgency, in the global policy response to the 2008 financial crisis. The Federal Reserve's quantitative easing programs, the Bank of England's gilt purchases, the European Central Bank's eventual asset-purchase programs — all of these reflected, in different forms, the determination to avoid Japan's 1990s outcome. Whether they succeeded fully is debatable. The Japanese experience, however, is now a permanent reference point in macroeconomic policy debate, a thirty-four-year reminder of what happens when a debt bubble is allowed to fully unwind under conditions of insufficient fiscal support.

The Nikkei has recovered. The lost decade has, by some accounting, ended. The lesson, however, is now a part of every central banker's working framework.