Calculate the growth rate between year $1$ and year $4$ using beginning period base:

$\backslash$table$[[$Year$,1,2,3,4],[x_t,10\mathrm{.}3,14\mathrm{.}4,23\mathrm{.}1,20\mathrm{.}8]]$

$1\mathrm{.}02$ or $102\%$

$0\mathrm{.}02$ or $2\%$

$1\mathrm{.}15$ or $115\%$

$0\mathrm{.}29$ or $29\%$