43 CP 2020 ANNUAL REPORT Diluted Earnings per Share *Adjusted diluted EPS is defined and reconciled in Non-GAAP Measures of this Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations. Diluted EPS was $17.97 in 2020, an increase of $0.45, or 3%, from $17.52 in 2019. This increase was due to a lower average number of outstanding Common Shares due to the Company's share repurchase program, and higher Net income. Diluted EPS was $17.52 in 2019, an increase of $3.91, or 29%, from $13.61 in 2018. This increase was due to higher Net income and lower average number of outstanding Common Shares due to the Company's share repurchase program. Adjusted diluted EPS, defined and reconciled in Non-GAAP Measures of this Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, was $17.67 in 2020, an increase of $1.23, or 7%, from $16.44 in 2019. Adjusted diluted EPS was $16.44 in 2019, an increase of $1.93, or 13%, from $14.51 in 2018. These increases were due to higher Adjusted income and lower average number of outstanding Common Shares due to the Company's share repurchase program. Operating Ratio The Operating ratio provides the percentage of revenues used to operate the railway. A lower percentage normally indicates higher efficiency in the operation of the railway. The Company’s Operating ratio was 57.1% in 2020, a 280 basis point improvement from 59.9% in 2019. This improvement was primarily due to: • liquidated damages, including customer volume commitments, and higher freight rates; • the favourable impact of changes in fuel prices;