Use the following price information for selected items for $2010$ and $2018.$ Production figures for those two periods are also given.

$\backslash$table$[[$Item$.,$Price,Quantity$],[2010,2018,2010,2018],[$Auminum $($cents per pound$),0\mathrm{.}65,0\mathrm{.}69,885,1,305],[$Natural gas $5$ per million BUA,$4\mathrm{.}20,2\mathrm{.}82,6\mathrm{.}158,3,858],[$Petroleum $($barrel$),71\mathrm{.}04,57\mathrm{.}98,63\mathrm{.}093,51\mathrm{.}45$