pre_text: The reconciliation of the United Kingdom statutory tax rate to the Company’s effective tax rate included in the accompanying consolidated statements of operations is as follows: Although the Company’s parent entity is organized under Jersey law, our affairs are, and are intended to be, managed and controlled ongoing in the United Kingdom. Therefore, the Company is resident in the United Kingdom for tax purposes. The Company’s parent entity is domiciled in the United Kingdom and its earnings are subject to 19%, 19% and 20% statutory tax rate for the years ended March 31, 2019, 2018 and 2017, respectively. The Company’s effective tax rate differs from the statutory rate each year primarily due to windfall tax benefits on equity award exercises, the valuation allowance maintained against the Company’s net deferred tax assets, the jurisdictional earnings mix, tax credits, withholding taxes, and other permanent differences primarily related to non-deductible expenses.
table: Year ended March 31, 
table: 2019 2018 2017
table: Tax at statutory rate 19.0% 19.0% 20.0%
table: U.S. state taxes, net of federal 31.1 14.1 (1.0)
table: Foreign rate differential   26.3 36.8 (39.3)
table: Meals and entertainment   (11.4) (3.1) (7.4)
table: Branch income / loss   (0.6) 0.4 0.9
table: Share-based compensation 172.3 105.3 (4.0)
table: Foreign exchange   — — (24.8)
table: Non-deductible interest expense   — — (3.3)
table: Tax credits 7.7 8.1 15.6
table: Unremitted earnings   (3.8) (1.2) —
table: Change in valuation allowance   (249.9) (110.7) 124.7
table: Deferred tax true-ups   (3.5) 8.4 (12.4)
table: Tax reserves   (4.9) (21.5) (117.7)
table: Provision to return   (0.1) 0.4 (0.7)
table: Withholding taxes   (2.6) (3.5) —
table: Other foreign taxes   — — (6.7)
table: Non-deductible expenses   (5.2) (2.4) (10.6)
table: Deferred tax rate change   (6.3) (77.8) (1.3)
table: Acquisition related costs   (7.6) — —
table: Other   (0.5) (0.2) —
table: Effective Tax Rate   (40.0)% (27.9)% (68.0)%
question: Analyse this data from a financial earnings document. What was the average Share-based compensation between 2017-2019?