[CentOS] Total Number of conecctions

I have the need to know how many connection the server has, i run this command but i don't know how to sum all the results and get a final number.
any ideas?

netstat -an | grep -E 'tcp|udp' | awk '{print $6}' | sort | uniq -c | sort -n

   1 CLOSE_WAIT
   1 FIN_WAIT_2
   1 LAST_ACK
   1 TIME_WAIT
   4 SYN_SENT
  15
  37 LISTEN
  44 ESTABLISHED



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Alejandro Rodriguez Luna

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