<Tr> <Th_colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Successor </Th> <Td> Cadillac XT5 </Td> </Tr> <P> The Cadillac SRX is a mid-size luxury crossover SUV that was produced by Cadillac from 2004 to 2015 . The second generation SRX was Cadillac's best selling model in the United States . </P> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table>

What year did the cadillac srx come out