Time_Wait Increasing

      1 Foreign
      1 established)
      2 FIN_WAIT2
     31 SYN_RECV
     34 LISTEN
     98 LAST_ACK
    136 FIN_WAIT1
   1954 TIME_WAIT
   9786 ESTABLISHED

What can be the reason for increasing time_wait

My server.timeout is set to 400

Anything i need to change