What does RGDP mean?

RGDP stands for Real Gross Domestic Product.
The Gross Domestic Product is the total monetary value of all the goods and services produced in
a given place at a given time (generally given annually for a particular country). So the US
Gross Domestic Product for 2018 is the total market value of everything produced in the US
during that year.

One of the problems with using GDP as a measure of economic
growth is that it includes inflation. If total GDP in a country was 10 trillion dollars in 2017
and 11 trillion dollars in 2018, it looks as though the economy of that country has grown by 10
percent. However, if the country experienced 20 percent inflation in 2018, then the economy has
really decreased in size. To compensate for this effect of inflation, economists divide the GDP
by the rate of inflation to find the RGDP, the Real Gross Domestic Product, which more
accurately reflects the true growth of the economy.

To use the same data the
other way around, the GDP (often called the nominal GDP) is sometimes divided by the RGDP to
obtain an index called the GDP deflator, which tells us the level of inflation in a country.
These calculations are generally published by a government agency of the country in question. In
the United States, they are generated by the Bureau of Economic Analysis.