pre_text: Stock-Based Compensation The following table summarizes the components of total stock-based compensation included in VMware’s consolidated statements of income during the periods presented (table in millions): As of January 31, 2020, the total unrecognized compensation cost for stock options and restricted stock was $1.8 billion and will be recognized through fiscal 2024 with a weighted-average remaining period of 1.5 years. Stock-based compensation related to VMware equity awards held by VMware employees is recognized on VMware’s consolidated statements of income over the awards’ requisite service periods.
table: For the Year Ended
table: January 31, 2020 February 1, 2019 February 2, 2018
table: Cost of license revenue $1 $1 $2
table: Cost of subscription and SaaS revenue 13 7 5
table: Cost of services revenue 83 58 53
table: Research and development 459 391 363
table: Sales and marketing 293 226 205
table: General and administrative 168 117 84
table: Stock-based compensation 1,017 800 712
table: Income tax benefit (347) (253) (232)
table: Total stock-based compensation, net of tax $670 $547 $480
question: Analyse this data from a financial earnings document. What was the change in the Cost of subscription and SaaS revenue between 2018 and 2019?