(in thousands, except per share amounts) | 2019 | 2018 | 2017 | 2016 | 2015 | |||||||||||||||
Net income for common stock | $ | 217,882 | $ | 201,774 | $ | 165,297 | $ | 248,256 | $ | 159,877 | ||||||||||
Weighted-average number of common shares outstanding | 108,949 | 108,855 | 108,749 | 108,102 | 106,418 | |||||||||||||||
Adjusted weighted-average number of common shares outstanding | 109,407 | 109,146 | 108,933 | 108,309 | 106,721 | |||||||||||||||
Basic earnings per common share | $ | 2.00 | $ | 1.85 | $ | 1.52 | $ | 2.30 | $ | 1.50 | ||||||||||
Diluted earnings per common share | $ | 1.99 | $ | 1.85 | $ | 1.52 | $ | 2.29 | $ | 1.50 | ||||||||||