| 2005. 9 | Minister of Land, Infrastructure and Transport |
| 2004. 9 | Minister of Land, Infrastructure and Transport |
| 2003. 11 | Elected to the House of Representatives (fifth term) |
| 2000. 6 | Chairman, New Komeito Policy Research Council |
| 2000. 6 | Elected to the House of Representatives (fourth term) |
| 2000. 6 | Licensed tax accountant |
| 2000. 1 | Director, Standing Committee on National Basic Policies |
| 1999. 1 | Chairman, Standing Committee on Science and Technology |
| 1998. 1 | Director, Standing Committee on Budget |
| 1996. 10 | Elected to the House of Representatives (third term) |
| 1994. 5 | Director, Standing Committee on Finance |
| 1993. 8 | Parliamentary Vice-Minister for Finance
(under the Hosokawa cabinet)
|
| 1993. 7 | Elected to the House of Representatives (second term) |
| 1993. 2 | Director, Standing Committee on Security |
| 1990. 12 | Director, Standing Committee on Audit |
| 1990. 2 | First elected to the House of Representatives |
| 1981. 4 | Lawyer |
