Show numbers next to the Users widget

Hi guys,

i need to add user count in the "Users" widget inside the People menu item. Where it says:
Users
All Users
Users with Photos
Online Users
Blocked Users

i need to show numbers next to it like:
All Users 100
Users with Photos 57
Online Users 45
Blocked Users 2

Can you please let me know where can i find the files for the widget and how can i pull the numbers?

thanks