Table 5 represent the percentages of coverage indices of JSH texts over each business-oriented text averaged together. Additionally, the authors combined the Business Eigo texts’ vocabulary with the JSH texts’ vocabulary, and then calculated the increase in the rate of coverage over BNC business dialogues and TOEIC practice tests. This was done in order to obtain an estimate of the percentage of increase in the foundational vocabulary learned at junior and senior high schools through addition of the items acquired from the radio program by the learners. The results are shown in the third row of Table 5.