Help me please!!!

I'm using Excel mac:2011, and i'm operating on MacOS High Sierra. and I was trying to create a user-form for an already existing data, designed the form, but I am having a problem, or rather I'm stuck on the combo box drop down add items. For “rank " Combo box, I wanted to add number 1-50, “State” combo box i wanted to Add all the States in the USA but abbreviated, " number of full-time employees, " i wanted to add " numbers and N/A” as a drop down and last combo box of " Year Est. " I wanted to add years ranging from 2018-1900. Lastly if you could help with a code of the “clear” command button.

Atlanta's Top 10 Minority-Owned Firms (version 1).xlsm55.91 KB