Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| School | Location | Mascot | Enrollment | IHSAA Class | County | Year Joined |
| --- | --- | --- | --- | --- | --- | --- |
| Crawfordsville | Crawfordsville | Athenians | 726.0 | AAA | 54 Montgomery | 1967.0 |
| Danville | Danville | Warriors | 811.0 | AAAA | 32 Hendricks | 1999.0 |
| Frankfort | Frankfort | Hot Dogs | 1006.0 | AAAA | 12 Clinton | 1967.0 |
| Lebanon | Lebanon | Tigers | 1043.0 | AAAA | 06 Boone | 1967.0 |
| North Montgomery | Linden | Chargers | 684.0 | AAA | 54 Montgomery | 1974.0 |
| South Montgomery | Crafordsville | Mounties | 625.0 | AAA | 54 Montgomery | 1985.0 |
| Tri-West | Lizton | Bruins | 604.0 | AAA | 32 Hendricks | 1999.0 |
| Western Boone | Thorntown | Stars | 902.0 | AAA | 06 Boone | 1983.0 |
Question:
Which Year Joined has an Enrollment smaller than 726, and a School of tri-west?
Answer:
1999.0