(Years ended March 31)

  2015 2016 2017 2018 2019
Capital expenditure
(Billions of yen)
30.7 25.7 31.6 38.5 50.0
Capital expenditure
of net sales (%)
3.5 2.9 3.7 4.0 5.0
R&D costs
(Billions of yen)
16.6 16.8 17.5 19.5 21.1
R&D expenses to
net sales ratio (%)
1.9 1.9 2.1 2.0 2.1