What is the operating cash flow of 2018, 2019 and 2020?

Net working capital: 315.9 (2017), 272.1 (2018), 214.2 (2019), 176.5 (2020)

Net equipment: 375.1 (2018), 415.1 (2019), 455.1 (2020)

Depreciation: 14 (2018), 20 (2019), 28 (2020)

Capital expenditure: 62.8 (2018), 60 (2019), 68 (2020)

Net revenue: 1602 (2018), 1682 (2019), 1766 (2020)

Operating expenses: 920 (2018), 959 (2019), 998 (2020)

Salary: 500 (2018), 525 (2019), 551 (2020)

Operating profit: 168 (2018), 178 (2019), 189 (2020)

Tax: 32%