Given the task definition and input, reply with output. You are given the conttent of a table in the input (row by row). Generate an unambiguous question based on the information present in the table, such that: 1) It's answer is unique and is in the given table, 2) Its answer is a contiguous text span from the table. Avoid creating questions that can be answered correctly without reading/understanding the table

Table: ['Year', 'Domestic passengers', 'International passengers', 'Total passengers', 'Change']. ['2006', '764,831', '83,115', '847,946', '+4.6%']. ['2007', '764,674', '75,276', '839,950', '-0.9%']. ['2008', '709,779', '92,176', '801,955', '-4.5%']. ['2009', '605,534', '82,424', '687,958', '-14.3%']. ['2010', '595,457', '105,119', '700,576', '+1.7%']. ['2011', '850,305', '123,607', '973,912', '+39.1%']. ['2012', '899 854', '178,679', '1,078,533', '+10.7%']. ['2013', '745,178', '131,902', '877,080', '-18.7%']
what are all of the years?