pre_text: Free Cash Flow Free cash flow is a non-IFRS financial measure that we calculate as net cash provided by operating activities less net cash used in investing activities for capital expenditures. Free cash flow increased by $140.9 million during the fiscal year ended June 30, 2019 due to a $154.9 million increase of net cash provided by operating activities, offset by a $14.0 million increase of capital expenditures as we continue to invest in our facilities. For more information about net cash provided by operating activities, please see “Liquidity and Capital Resources”.
table: Fiscal Year Ended June 30,
table: 2019 2018 2017
table: Net cash provided by operating activities $466,342 $311,456 $199,381
table: Less: Capital expenditures (44,192) (30,209) (15,129)
table: Free cash flow $422,150 $281,247 $184,252
question: Analyse this data from a financial earnings document. What is the average net cash provided by operating activities from 2017-2019?