def get_years(self):
		"Get a list of years for which the user has records."
		
		# Create query:
		# SELECT DISTINCT EXTRACT('year' FROM day)
		# FROM days
		# WHERE username = <username>;
		sel = sa.sql.select([sa.sql.extract('year', days_table.c.day).distinct()], whereclause=days_table.c.username==self.username)
		
		# Execute the query and get all results
		years = session_context.current.bind_to.execute(sel).fetchall()
		
		# Strip the superfluous tuples
		return [int(y[0]) for y in years]