Shares | Weighted Average Exercise Price Per Share | Weighted Average Remaining Contractual Life (Years) | Aggregate Intrinsic Value | ||||||||
Number of shares under option: | |||||||||||
Outstanding at beginning of year | 33,664,018 | $71.81 | |||||||||
Granted | 6,698,861 | 76.35 | |||||||||
Exercised | (15,605,753) | 70.31 | |||||||||
Forfeited | (926,233) | 74.74 | |||||||||
Expired | (63,150) | 68.30 | |||||||||
Outstanding at end of year | 23,767,743 | $73.97 | 6.81 | $1,486 | |||||||
Exercisable at end of year | 12,552,449 | $72.70 | 5.11 | $801 | |||||||