Final answer:
The GDP deflator value for 2021 is not directly given in the provided information. It is a price index used to calculate real GDP from nominal GDP, with data available up to 2020. One must refer to the latest data from official sources for the exact 2021 GDP deflator value.
Step-by-step explanation:
The GDP deflator is an important economic indicator that measures the average price level of all final goods and services produced within a country's borders. It is a price index that helps to adjust nominal GDP to reflect changes in price levels, thus converting it into real GDP. The value of the GDP deflator for 2021 is not provided in the information given, which stops at 2020. However, the patterns up until 2020 plus recent economic events such as inflation can suggest the overall trend. To find the exact value of the GDP deflator for 2021, one would have to access the latest data released by the Bureau of Economic Analysis (BEA) or other official sources.