The activity index of the tertiary industry helps to understand an overall picture of industrial activities, inclusive of all business categories in the tertiary industry. The composite index is a general indicator in which the indexes to express the activity in respective business categories are consolidated with weight in terms of the scale of relative importance of each business category (value added). Wholesale Trade is the most important sector and accounts for 15 percent of tertiary activity, followed by Medical, Health Care & Welfare and Living & Amusement-related Services (12 percent each), Information & Communications (11 percent), Retail Trade and Transport & Postal Activities (10 percent each), Finance and Insurance (9 percent), Real Estate (8 percent), Business-related Services (7 percent), and Electricity, Gas, Heat Supply & Water and Goods Rental and Leasing (3 percent each). This page provides - Japan Tertiary Industry Index- actual values, historical data, forecast, chart, statistics, economic calendar and news. Japan Tertiary Industry Index - actual data, historical chart and calendar of releases - was last updated on July of 2019.