pre_text: schlumberger limited and subsidiaries shares of common stock ( stated in millions ) issued in treasury shares outstanding .
post_text: see the notes to consolidated financial statements .
table: Issued In Treasury Shares Outstanding
table: Balance, January 1, 2009 1,334 (140) 1,194
table: Shares sold to optionees less shares exchanged – 4 4
table: Vesting of restricted stock – 1 1
table: Shares issued under employee stock purchase plan – 4 4
table: Stock repurchase program – (8) (8)
table: Balance, December 31, 2009 1,334 (139) 1,195
table: Acquisition of Smith International, Inc. 100 76 176
table: Shares sold to optionees less shares exchanged – 6 6
table: Shares issued under employee stock purchase plan – 3 3
table: Stock repurchase program – (27) (27)
table: Issued on conversions of debentures – 8 8
table: Balance, December 31, 2010 1,434 (73) 1,361
table: Shares sold to optionees less shares exchanged – 6 6
table: Vesting of restricted stock – 1 1
table: Shares issued under employee stock purchase plan – 3 3
table: Stock repurchase program – (37) (37)
table: Balance, December 31, 2011 1,434 (100) 1,334
question: Analyse this data from a financial earnings document. what was the total of shares ( millions ) issued to employees in the 3 year period?