https://www.nintendo.co.jp/ir/pdf/2018/180426e.pdf page 2. Surprised nobody posted this.
(1) Operating results for the fiscal year ended March 31, 2018 The results for this fiscal year show a very positive trend in global hardware sales for Nintendo Switch, which sold a total of 15.05 million units during this fiscal year. On the software end, Super Mario Odyssey has been a major hit with audiences worldwide, and sold 10.41 million units. This is in addition to 9.22 million units sold for Mario Kart 8 Deluxe, and 6.02 million units sold for Splatoon