pre_text: Our 2019 net revenues decreased 1.1% compared to the prior year, primarily due to a decrease in volumes of approximately 8%, partially compensated by an increase in average selling prices of approximately 7%. The increase in the average selling prices was driven by favorable product mix of approximately 10%, partially offset by a negative pricing effect of approximately 3%. Our 2018 net revenues increased 15.8% compared to the prior year, primarily due to increase in average selling prices of approximately 16%, while volumes remained substantially flat. The increase in the average selling prices was driven by favorable product mix of approximately 18%, partially offset by a negative pricing effect of approximately 2%. Our net revenues registered double-digit growth across all product groups and geographies. In 2019, 2018 and 2017, our largest customer, Apple, accounted for 17.6%, 13.1% and 10.5% of our net revenues, respectively, reported within our three product groups.
table: Year Ended December 31, Year Ended December 31, Year Ended December 31, % Variation % Variation
table: 2019 2018 2017 2019 vs 2018 2018 vs 2017
table: (in millions) (in millions) (in millions)
table: Net sales $9,529 $9,612 $8,308 (0.9)% 15.7%
table: Other revenues 27 52 39 (49.0) 36.1
table: Net revenues $9,556 $9,664 $8,347 (1.1)% 15.8%
question: Analyse this data from a financial earnings document. What are the average Net sales?