$\backslash$table$[[$Name$,$Year,OSP,BA$],[$Anna$,20,\mathrm{.}25,130],[$Anna$,19,\mathrm{.}39,80],[$Anna$,18,\mathrm{.}16,102],[$Harry$,20,\mathrm{.}44,400],[$Harry$,19,\mathrm{.}35,240],[$Harry$,18,\mathrm{.}31,348]]$ I have data that looks like this with hundreds of names. How do I predict for $2021$ OSP given prior years OSP and BA$?$ Code in r