|Millions of yen||Thousands of U.S. dollars (Note)|
|Millions of yen||2013.3||2014.3||2014.12*||2015.12||2016.12||2016.12|
|For the Year:|
|Research and development expenses||30,428||35,273||26,785||34,250||31,911||273,946|
|R&D ratio to net sales (%)||24.3%||28.0%||29.3%||25.5%||21.2%||21.2%|
Note. U.S. dollar amounts are translated from yen, for convenience only, at the rate of ¥116.49=US$1, the approximate exchange rate at December 31, 2016
*Due to a change in the fiscal year end from March 31 to December 31, the fiscal year 2014 is the nine-month period from April through December.