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Current GDP Deflator: 110.64
GDP Deflator for Sep 2018
Mean: 48.50
Median: 42.71
Min: 7.00 (Dec 1933)
Max: 110.64 (Sep 2018)

The GDP Deflator is the ratio of Nominal GDP to Real GDP times 100, using 2009 as the base year.

Source: US Bureau of Economic Analysis