What is the increase/ (decrease) in Diluted Earnings per share from 2018 to 2019?
{"Numerator (basic)  Net income for the year": {"2019": 2043.0, "2018": 2059.0}, "Denominator  Number of shares (in millions): Weighted average number of shares outstanding  basic": {"2019": 512.0, "2018": 515.0}, "Effect of dilutive securities (in millions): Employee stock options and restricted share units": {"2019": 1.0, "2018": 1.0}, "Weighted average number of shares outstanding  diluted": {"2019": 513.0, "2018": 516.0}, "Earnings per share: -- Basic": {"2019": 3.99, "2018": 4.0}, "Earnings per share: -- Diluted": {"2019": 3.97, "2018": 3.99}}
diluted_earnings_2019 = df["Earnings per share: -- Diluted"]["2019"]
basic_earnings_2019 = df["Earnings per share: -- Basic"]["2019"]
answer = diluted_earnings_2019 - basic_earnings_2019