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 Year | Class A | Class AA | Class AAA | Class AAAA | Class AAAAA |
| --- | --- | --- | --- | --- | --- |
| 1994-95 | Menard | Van Alstyne | Cameron Yoe | Wichita Falls | Weslaco |
| 1995-96 | Era | Coahoma | Colorado City | Livingston | Duncanville |
| 1996-97 | Sulphur Bluff | Marion | Colorado City | Snyder | Duncanville |
| 1997-98 | Westbrook | Edgewood | Perryton | San Angelo Lake View | Flower Mound Marcus |
| 1998-99 | Graford | Lindsay | Hamshire-Fannett | Brownwood | Weslaco |
| 1999-2000 | Garden City | Keene | Giddings | Friendswood | College Station A&M Consolidated |
| 2000-01 | Granger | Edgewood | Midland Greenwood | Friendswood | College Station A&M Consolidated |
| 2001-02 | Lazbuddie | Edgewood | Giddings | Friendswood | Pasadena Dobie |
| 2002-03 | Rocksprings | Rosebud-Lott | Pearsall | Harlingen South | San Antonio Clark |
| 2003-04 | Lazbuddie | Wall | Hamshire-Fannett | Friendswood | Klein |
| 2004-05 | Loop | Mount Pleasant Chapel Hill | Llano | Sherman | College Station A&M Consolidated |
| 2005-06 | Wellington | Centerville | Hamshire-Fannett | Brownwood | Abilene Cooper |
| 2006-07 | Springlake-Earth | Crawford | Princeton | Friendswood | College Station A&M Consolidated |
| 2007-08 | Springlake-Earth | Grandview | Hamshire-Fannett | Sherman | Mission Sharyland |
| 2008-09 | Garden City | Shelbyville | Lubbock-Cooper | Friendswood | Humble Kingwood |
Question:
what was the only year keene won class aa?
Answer:
1999-2000