QUeue depth utilization for storage adapter

Hi,

esxtop command providing lun queue depth(LQLEN) and percentage of queue depth(%USD) for storage adapter and lun.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1027901

i can able to get only queue depth for adapter and lun from vsphere api. Is it possible to get percentage of queue depth from api? if so, where can i get that details?