pre_text: NOTE 2 — EARNINGS PER SHARE Basic earnings per share (“EPS”) is computed based on the weighted average number of shares of common stock outstanding during the period. Diluted EPS is computed based on the weighted average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include outstanding stock options and stock awards. The components of basic and diluted EPS were as follows: Anti-dilutive stock-based awards excluded from the calculations of diluted EPS were immaterial during the periods presented.
table: (In millions, except earnings per share)
table: Year Ended June 30, 2019 2018 2017
table: Net income available for common shareholders (A) $  39,240 $  16,571 $  25,489
table: Weighted average outstanding shares of common stock (B) 7,673 7,700 7,746
table: Dilutive effect of stock-based awards 80 94 86
table: Common stock and common stock equivalents (C) 7,753 7,794 7,832
table: Earnings Per Share
table: Basic (A/B) $ 5.11 $ 2.15 $ 3.29
table: Diluted (A/C) $ 5.06 $ 2.13 $ 3.25
question: Analyse this data from a financial earnings document. What was the average basic earnings per share over the 3 year period from 2017 to 2019?