<Tr> <Th> Date </Th> <Th> Premiere viewers (in millions) </Th> <Th> Date </Th> <Th> Finale viewers (in millions) </Th> </Tr> <Tr> <Td> </Td> <Td> Tuesday 9: 00 pm (eps. 1--2, 7--9, 11) Tuesday 10: 00 pm (eps. 3--6) Wednesday 8: 15 pm (ep. 10) Wednesday 8: 00 pm (finale) </Td> <Td> 12 </Td> <Td> April 26, 2011 </Td> <Td> 11.78 </Td> <Td> June 29, 2011 </Td> <Td> 11.05 </Td> <Td> 2010--11 </Td> <Td> 20 </Td> <Td> 12.33 </Td> </Tr> <Tr> <Td> </Td> <Td> Sunday 10: 21 pm Monday 8: 00 pm Tuesday 9: 00 pm </Td> <Td> 21 </Td> <Td> February 5, 2012 </Td> <Td> 37.61 </Td> <Td> May 8, 2012 </Td> <Td> 11.90 </Td> <Td> 2011--12 </Td> <Td> 9 </Td> <Td> 15.76 </Td> </Tr> <Tr> <Td> </Td> <Td> Monday 8: 00 pm Tuesday 8: 00 pm Wednesday 8: 00 pm Thursday 8: 00 pm (ep. 20) </Td> <Td> 32 </Td> <Td> September 10, 2012 </Td> <Td> 12.28 </Td> <Td> December 18, 2012 </Td> <Td> 14.13 </Td> <Td> 2012--13 </Td> <Td> 10 </Td> <Td> 14.24 </Td> </Tr>

Who was the judge on the voice last year