pre_text: Net Loss per Share The Company applies the two-class method to calculate its basic and diluted net loss per share as both classes of its voting shares are participating securities with equal participation rights and are entitled to receive dividends on a share for share basis. The following table summarizes the reconciliation of the basic weighted average number of shares outstanding and the diluted weighted average number of shares outstanding: In the years ended December 31, 2019 and 2018, the Company was in a loss position and therefore diluted loss per share is equal to basic loss per share.
table: Years ended
table: December 31, 2019 December 31, 2018
table: Basic and diluted weighted average number of shares outstanding 113,026,424 105,671,839
table: The following items have been excluded from the diluted weighted average number of shares outstanding because they are anti-dilutive:
table: Stock options 3,812,242 5,476,790
table: Restricted share units 1,939,918 2,473,665
table: Deferred share units 673 347
table: 5,752,833 7,950,802
question: Analyse this data from a financial earnings document. What is the average anti-dilutive deferred share units for 2018 and 2019?