<Table> <Tr> <Th colspan="2"> Season </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> <Th colspan="2"> Nielsen ratings </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> <Th> Rank </Th> <Th> Viewers ( in millions ) </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 24 , 2010 ( 2010 - 09 - 24 ) </Td> <Td> May 13 , 2011 ( 2011 - 05 - 13 ) </Td> <Td> 19 </Td> <Td> 12.58 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 23 , 2011 ( 2011 - 09 - 23 ) </Td> <Td> May 11 , 2012 ( 2012 - 05 - 11 ) </Td> <Td> 22 </Td> <Td> 12.16 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 23 </Td> <Td colspan="1"> September 28 , 2012 ( 2012 - 09 - 28 ) </Td> <Td> May 10 , 2013 ( 2013 - 05 - 10 ) </Td> <Td> 14 </Td> <Td> 13.17 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 27 , 2013 ( 2013 - 09 - 27 ) </Td> <Td> May 9 , 2014 ( 2014 - 05 - 09 ) </Td> <Td> 10 </Td> <Td> 13.63 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 5 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 26 , 2014 ( 2014 - 09 - 26 ) </Td> <Td> May 1 , 2015 ( 2015 - 05 - 01 ) </Td> <Td> 13 </Td> <Td> 13.77 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 6 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 25 , 2015 ( 2015 - 09 - 25 ) </Td> <Td> May 6 , 2016 ( 2016 - 05 - 06 ) </Td> <Td> 10 </Td> <Td> 13.07 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 7 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 23 , 2016 ( 2016 - 09 - 23 ) </Td> <Td> May 5 , 2017 ( 2017 - 05 - 05 ) </Td> <Td> 8 </Td> <Td> 14.07 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 8 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 29 , 2017 ( 2017 - 09 - 29 ) </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> TBA </Td> </Tr> </Table>
<Table> <Tr> <Th colspan="2"> Season </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> <Th colspan="2"> Nielsen ratings </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> <Th> Rank </Th> <Th> Viewers ( in millions ) </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 24 , 2010 ( 2010 - 09 - 24 ) </Td> <Td> May 13 , 2011 ( 2011 - 05 - 13 ) </Td> <Td> 19 </Td> <Td> 12.58 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 23 , 2011 ( 2011 - 09 - 23 ) </Td> <Td> May 11 , 2012 ( 2012 - 05 - 11 ) </Td> <Td> 22 </Td> <Td> 12.16 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 23 </Td> <Td colspan="1"> September 28 , 2012 ( 2012 - 09 - 28 ) </Td> <Td> May 10 , 2013 ( 2013 - 05 - 10 ) </Td> <Td> 14 </Td> <Td> 13.17 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 27 , 2013 ( 2013 - 09 - 27 ) </Td> <Td> May 9 , 2014 ( 2014 - 05 - 09 ) </Td> <Td> 10 </Td> <Td> 13.63 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 5 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 26 , 2014 ( 2014 - 09 - 26 ) </Td> <Td> May 1 , 2015 ( 2015 - 05 - 01 ) </Td> <Td> 13 </Td> <Td> 13.77 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 6 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 25 , 2015 ( 2015 - 09 - 25 ) </Td> <Td> May 6 , 2016 ( 2016 - 05 - 06 ) </Td> <Td> 10 </Td> <Td> 13.07 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 7 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 23 , 2016 ( 2016 - 09 - 23 ) </Td> <Td> May 5 , 2017 ( 2017 - 05 - 05 ) </Td> <Td> 8 </Td> <Td> 14.07 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> 8 </Td> <Td colspan="2"> 22 </Td> <Td colspan="1"> September 29 , 2017 ( 2017 - 09 - 29 ) </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> TBA </Td> </Tr> </Table>
how many episodes of blue bloods were there in season 7
how many episodes of blue bloods were there in season 7
22
22