Seasonally adjusted numbers. Base year = 2010 (2010 average = 100). As for base year 2000 data, please refer to ALLX JNCB.The base year for Indices of Industrial Production has been revised to 2010 as of June 2013. X-12-ARIMA(Final Version 0.2.8) Accept item number: 175 (1) Method /// Seasonal adjustment series by the Census Method II (X-11 Default of X-12-ARIMA), the formerly adopted method, has been calculated reference since 1999 annual revision. SEASONAL ADJUSTMENT INDEX = ORIGINAL INDEX / SEASONAL INDEX. (2) Employment of seasonal indices /// The method of temporary seasonal adjustment is adopted for the seasonal index after January, 2004. That is to say, the method seasonal indecies in 2003 is adopted as those in 2004.