<Tr> <Td> </Td> <Td> Rome </Td> <Td> Italy </Td> <Td> 7006287921500000000 ♠ 2,879,215 </Td> <Td> 000000002016 - 12 - 31 - 0000 31 December 2016 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Paris </Td> <Td> France </Td> <Td> 7006222840900000000 ♠ 2,228,409 </Td> <Td> 000000002015 - 01 - 01 - 0000 1 January 2015 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Bucharest </Td> <Td> Romania </Td> <Td> 7006210614400000000 ♠ 2,106,144 </Td> <Td> 000000002016 - 01 - 01 - 0000 1 January 2016 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Vienna </Td> <Td> Austria </Td> <Td> 7006188908300000000 ♠ 1,889,083 </Td> <Td> 000000002018 - 01 - 01 - 0000 1 January 2018 </Td> <Td> </Td> <Td> </Td> </Tr>

How many european countries begin with the letter b