pre_text: Movements in Class A ordinary share capital Class A shares as of June 30, 2019 and June 30, 2018 does not include 911,367 and 827,871 shares of restricted stock outstanding, respectively, that are subject to forfeiture or repurchase.
table: Number of Shares Amount
table: (U.S. $ in thousands)
table: Details
table: Balance as of June 30, 2017 91,979,704 $9,198
table: Conversion of Class B ordinary shares 5,861,707 587
table: Exercise of share options 1,902,084 190
table: Issuance for settlement of RSUs 5,253,809 525
table: Vesting of share options that were early exercised 374,496 37
table: Balance as of June 30, 2018 105,371,800 10,537
table: Conversion of Class B ordinary shares 5,219,947 522
table: Exercise of share options 1,496,875 150
table: Issuance for settlement of RSUs 4,674,873 467
table: Vesting of share options that were early exercised 510,071 51
table: Balance as of June 30, 2019 117,273,566 $11,727
question: Analyse this data from a financial earnings document. What is the average annual number of shares of restricted stock outstanding for both years ended June 30, 2018 and 2019?