| Series | First | Latest | Min | Max |
|---|---|---|---|---|
| Nominal GDP | 100.0 | 13355.3 | 100.0 | 13355.3 |
| Real GDP | 100.0 | 1112.0 | 99.5 | 1112.0 |
Index GDP and GDPC1 to 100 at the first shared quarterNominal GDP (GDP, current dollars) and real GDP (GDPC1, chained 2017 dollars) rebased to 100 at the first shared observation. The two lines cannot be compared on raw dollar values because one is in current dollars and the other in chained dollars; indexing isolates the volume vs price split.
As of Q2 2026, the Nominal GDP line stands at 13355.3 and the Real GDP line at 1112.0 (both base = 100 at the shared start). The Nominal GDP line is up 6.5% over the past year and above its long-run median of 1905.2.
When the nominal line pulls away from the real line, prices are doing more of the work: the economy is growing in dollar terms largely because things cost more, not because more is being produced. When the two lines move together, growth is coming from real output. The post-1970s gap is dominated by four decades of compounding inflation rather than any single price shock.
The dollar value of GDP cannot be compared across decades because inflation changes what a dollar is worth. Rebasing both series to 100 at the start and plotting them together makes the inflation component visible as the gap between the lines: nominal growth above real growth is, by definition, inflation. The ratio of the two is the GDP deflator, the broadest measure of economy-wide price change.
Real GDP is chained to 2017 dollars, so its level depends on the chosen base year even though its growth rate does not. GDP revisions are common: the BEA releases three estimates per quarter, and annual revisions can shift historical levels. Both series are seasonally adjusted at the source. The chart says nothing about GDP composition (consumption, investment, government, net exports) or about distribution. Treat it as context for the inflation-vs-output split, not investment advice.
Since the first shared quarter in 1947, nominal GDP has risen roughly 131-fold while real GDP has risen roughly 11-fold, so the cumulative price component over 79 years is about 12x. The gap widened fastest during the 1970s stagflation, when nominal growth ran well ahead of real growth, and narrowed during the 2008-2009 crisis when both contracted together. The 2020 pandemic quarter saw the largest real GDP drop in the series before a sharp rebound.
The ratio of nominal GDP to real GDP is the GDP deflator, the broadest measure of economy-wide price inflation, and it is more comprehensive than CPI because it includes investment goods and government spending. Economists and central-bank watchers use this chart to visualise the deflator's cumulative effect over decades, which is hard to grasp from a single index number.
Macro strategists decompose nominal GDP growth into its real (volume) and inflation (price) components to judge the quality of headline growth. The 1970s showed high nominal growth masking stagnant real growth, while the 1990s showed nominal and real moving more closely together. This chart makes that decomposition visible across the full post-war window.
Long-horizon investors use real GDP as the anchor for sustainable equity returns, since profits cannot outgrow the real economy indefinitely. Comparing cumulative equity returns against the real GDP line over the same window, as PIER20 does in the stock-prices-vs-CPI benchmark, gives a sense of how much of equity outperformance is structural versus cyclical.
As of Q2 2026, the Nominal GDP line stands at 13355.3 and the Real GDP line at 1112.0 (both base = 100 at the shared start). The Nominal GDP line is up 6.5% over the past year and above its long-run median of 1905.2.
This benchmark is built on quarterly data. The page is refreshed when the source publishes new observations; the freshness block below the chart shows the exact data-through date and when PIER20 last fetched the file.
The chart is built from Nominal GDP and Real GDP, sourced from Federal Reserve Economic Data (FRED).
Most of it, over long windows. Since 1947 nominal GDP has risen roughly 131-fold while real GDP has risen only roughly 11-fold, so the cumulative price component is about 12x over 79 years. In other words, roughly 90% of the dollar increase in GDP over the post-war era reflects higher prices rather than higher output.
Nominal GDP measures output in current dollars, so it rises with both production and prices. Real GDP measures output in constant dollars (chained to a base year, currently 2017), so it rises only with production. The difference between the two is, by definition, the effect of price changes: the GDP deflator.
The GDP deflator measures price changes across everything produced in the economy, including investment goods, government spending and exports, and excludes imports. CPI measures price changes for a fixed basket of consumer goods and services. The deflator is broader and is the measure used to convert nominal GDP to real GDP; CPI is the measure used for inflation-indexed benefits and contracts.
The 1970s stagflation combined two oil shocks, a wage-price spiral and accommodative monetary policy, so nominal GDP grew rapidly through inflation while real GDP stagnated. That is the clearest episode in modern history where the nominal-real gap widens fastest: nominal growth looks strong but real growth is weak. The gap narrowed again once Volcker's rate hikes broke the inflation cycle in the early 1980s.
One tested idea, through the evidence stack. No migration of any kind.