For the Three Months Ended

For the Six Months Ended

June 30,

2023

2022

2023

2022

Numerator (basic and diluted):

Net income

$

627,365

$

576,760

$

1,144,250

$

1,058,640

Denominator:

Weighted-average common shares outstanding – basic

60,817

65,116

61,324

65,840

Effect of stock options ⁽¹⁾

549

570

554

594

Weighted-average common shares outstanding – assuming dilution

61,366

65,686

61,878

66,434

Earnings per share:

Earnings per share-basic

$

10.32

$

8.86

$

18.66

$

16.08

Earnings per share-assuming dilution

$

10.22

$

8.78

$

18.49

$

15.94

Antidilutive potential common shares not included in the calculation of diluted earnings per share:

Stock options ⁽¹⁾

79

135

88

133

Weighted-average exercise price per share of antidilutive stock options ⁽¹⁾

$

825.99

$

656.05

$

808.19

$

656.62