pre_text: 3.3 DEPRECIATION AND AMORTIZATION (1) Fiscal 2018 was restated to comply with IFRS 15 and to reflect a change in accounting policy as well as to reclassify results from Cogeco Peer 1 as discontinued operations. For further details, please consult the "Accounting policies" and "Discontinued operations" sections. Fiscal 2019 depreciation and amortization expense increased by 10.9% resulting mainly from the impact of the MetroCast acquisition combined with additional depreciation from the acquisitions of property, plant and equipment during the fiscal year and the appreciation of the US dollar against the Canadian dollar compared to the prior year.
table: Years ended August 31, 2019 2018 (1) Change
table: (in thousands of dollars, except percentages) $ $ %
table: Depreciation of property, plant and equipment 423,432 387,726 9.2
table: Amortization of intangible assets 57,293 45,928 24.7
table: 480,725 433,654 10.9
question: Analyse this data from a financial earnings document. What was the increase / (decrease) in Amortization of intangible assets from 2018 to 2019?