Gross Domestic Product (GDP) is the market value of all final goods and services produced and purchased within a country during a given time period. There are two ways to measure GDP:
The GDP Deflator is the price index used to measure changes in the overall level of prices for the goods and services that make up GDP. It is simply the ratio of nominal to real GDP times 100. It is also 100 times the ratio of nominal GDP per capita (per-capita GDP at current market prices) to real GDP per capita (per-capita GDP at constant (2003) market prices).
GDP per capita is calculated by dividing either nominal or real GDP for a given year by the population in that year. These numbers can be thought of as the average share of output per person.
These six measures can be determined for any year, or range of years, between 1830 and 2007. The series are also extended back in time to encompass the following individual years: 1300, 1688, 1759, 1801, 1811, and 1821.
For additional information about the GDP, please read "What Was the UK GDP Then? A Question-and-Answer Guide". For more in-depth information on the development of the series, please read "What Was the UK GDP Then? A Data Study".
Lawrence H. Officer, "What Was the U.K. GDP Then?" MeasuringWorth, 2008.
Please read our Note on Data Revisions.
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