pre_text: ADVANCED ENERGY INDUSTRIES, INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (continued) (in thousands, except per share amounts) Disaggregation of Revenue The following table presents our sales by product line, which includes certain reclassifications to prior comparative periods to conform to our current year presentation:
table: Years Ended December 31,
table: 2019 2018 2017
table: Semiconductor Equipment $403,018 $533,770 $554,063
table: Industrial & Medical 245,992 185,122 116,949
table: Data Center Computing 91,438 — —
table: Telecom & Networking 48,500 — —
table: Total $788,948 $718,892 $671,012
question: Analyse this data from a financial earnings document. What was the change in sales of Industrial & Medical products between 2018 and 2019?