Table $3\mathrm{.}1$ in Example $3\mathrm{.}2$ is below.

Week

$0$

$1$

$2$

$3$

$4$

$5$

$6$

$7$

$8$

Average

Production Ri

$800$

$1,100$

$1,000$

$900$

$1,200$

$1,100$

$950$

$950$

$1,000$

Demand Ro

$1,200$

$800$

$900$

$1,100$

$1,300$

$1,300$

$550$

$850$

$1,000$

Buildup rate $\backslash$Delta R

$-400$

$300$

$100$

$-200$

$-100$

$-200$

$400$

$100$

$0$

Ending Inventory I$($t$)$

$2,200$

$1,800$

$2,100$

$2,200$

$2,000$

$1,900$

$1,700$

$2,100$

$2,200$

$2,000$

Based on the information in the table above, is this a stable process over this $8$ week period? True if it is stable. False otherwise.