user: Question: What year has a make & model of MCI D4000N?
Columns: ['Year', 'Make & Model', 'Length', 'Engine Type', 'Numbers']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2000-2004', 'Orion VI', 'ft (m)', 'Diesel', '6000-6161 (160 buses)']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Make & Model" = 'MCI D4000N';