DHCP Statistics

Is there a way to see DHCP statistics on the fortigate firewall (FG600C) much like you would see on a Windows server and selecting display statistics on a given scope?   The DHCP monitor only shows all of the leases.  I'm would like to see how many are in use.  My workaround is to hit CTRL A on the DHCP monitor screen and copy/paste into Excel to get a count.  There has to be a better way than this.