pre_text: Activity under our stock option plans is summarized as follows: (a) Weighted-average exercise price (b) Weighted-average contractual life remaining The total aggregate intrinsic value of options exercised is $2,149, $1,724, and $1,944 for fiscal years ended March 31, 2017, 2018, and 2019, respectively.
table: Number of Shares Average Price (a) Average Life (years) (b) Aggregate Intrinsic Value
table: Outstanding at March 31, 2018 1,894 $12.90 - -
table: Options granted - - - -
table: Options exercised (326) 13.11 - $1,944
table: Options cancelled/forfeited (122) 13.22 - 295
table: Outstanding at March 31, 2019 1,446 $12.82 3.29 $6,528
table: Exercisable at March 31, 2019 1,347 $12.70 3.08 $6,253
question: Analyse this data from a financial earnings document. What is the total aggregate intrinsic value of options exercised between 2017 to 2019?