display Aggregate spped of etherchannel port

I have 2 fastethernet ports that I configured as etherchannel
they are 100MB each , but when I type:

Switch2#sh interface port-channel 1 status
Port      Name               Status       Vlan       Duplex  Speed Type
Po1                          connected    trunk      a-full  a-100


As you notice the speed is shown 100 instead of 200

can someone explain why it is showing 100 instead of 200

Thanks