Depreciation on residential real property used as a rental on different occasions

I bought my home in 1999.  Lived in it until 2001 when I rented it.  Moved back in on 2005.  Lived in it till 2014 then rented it out.  As of this year 2020 it is still being rented.  I do not have tax returns for 2001 thru 2004 so I don't know what depreciation was taken.  I do have my property tax statements from 2003 till present.  I also have tax returns for the rental years 2015 thru 2018.