user: Question: What is the highest Number of seasons in Liga MX for Club cruz azul, when their season in the top division is higher than 68?
Columns: ['Club', 'First season in top division', 'Number of seasons in top division', 'First season of current spell in top division', 'Number of seasons in Liga MX', 'Top division titles']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['América', '1943-44', 89.0, '1943-44', 89.0, 11.0]
SQL:

assistant: SELECT MAX("Number of seasons in Liga MX") FROM "Table" WHERE "Club" = 'cruz azul' AND "Number of seasons in top division" > 68.0;