CREATE TABLE table_204_696 (id DECIMAL, "issue" DECIMAL, "volume" DECIMAL, "title" TEXT, "main feature story" TEXT, "first/early appearance story/stories" TEXT, "release date" TEXT)

how many total wolverine volumes are there ?
SELECT "volume" FROM table_204_696 WHERE "title" = 'wolverine'
SELECT "volume" FROM "table_204_696" WHERE "title" = 'wolverine'