Unsafe shutdown count increase by 1 every time when shutdown laptop normally

WD Internal Drives Desktop & Mobile Drives
2

If you are using it on an external enclosure, do you safely eject it before disconnecting the USB cable or turning off the PC? 

http://wdc.custhelp.com/app/answers/detail/a_id/5316

http://wdc.custhelp.com/app/answers/detail/a_id/940