Years Ended December 31,

2023

2022

2021

Net income (in thousands)

$

614,254

$

555,989

$

324,016

Weighted average number of common shares outstanding - basic

31,597,508

32,213,839

32,801,906

Dilutive effect of common stock equivalents:

RSAs with service-based conditions

30,368

15,199

21,130

RSAs with market-based conditions

37,519

59,561

127,723

RSAs with performance-based conditions

25,645

46,601

65,262

Stock options

85,861

105,205

130,150

Weighted average number of common shares outstanding - diluted

31,776,901

32,440,405

33,146,171

Basic net income per common share

$

19.44

$

17.26

$

9.88

Diluted net income per common share

$

19.33

$

17.14

$

9.78