pre_text: Note 21. Earnings Per Share Basic earnings per share are based on the weighted average number of common shares outstanding during the periods. Diluted earnings per share includes the weighted average number of common shares outstanding during the respective periods and the further dilutive effect, if any, from stock appreciation rights, restricted stock, restricted stock units and shares held in rabbi trust using the treasury stock method. The number of shares used in the earnings per share computation were as follows (in thousands):
table: Years Ended December 31,
table: 2019 2018 2017
table: Basic:
table: Weighted average common shares outstanding 41,649 42,090 41,822
table: Diluted:
table: Dilutive effect of stock appreciation rights, restricted stock, restricted stock units and shares held in rabbi trust 153 156 319
table: Total weighted average diluted shares outstanding 41,802 42,246 42,141
table: Anti-dilutive shares excluded from the diluted earnings per share calculation 69 44 46
question: Analyse this data from a financial earnings document. What was the change in the Anti-dilutive shares excluded from the diluted earnings per share calculation in 2019 from 2018?