pre_text: A summary of additions and deductions related to the allowance for doubtful accounts for the years ended March 31, 2019, 2018 and 2017 follows (amounts in millions): (1) Deductions represent uncollectible accounts written off, net of recoveries.
table: Balance at Beginning of Year Additions Charged to Costs and Expenses Deductions (1) Balance at End of Year
table: Allowance for doubtful accounts:
table: Fiscal 2019 $2.2 $— $(0.2) $2.0
table: Fiscal 2018 $2.1 $0.2 $(0.1) $2.2
table: Fiscal 2017 $2.5 $0.2 $(0.6) $2.1
question: Analyse this data from a financial earnings document. What was the change in the Balance at Beginning of Year between 2017 and 2018?