Answer
The difference is of $1138\text{ billion dollars}$
Work Step by Step
Consider the given bar graph.
From the image above, the number corresponding to $2007$year are,
Money collected was$2568$ billion dollars
Money spent was$2729$ billion dollars
So, the total difference in amount is,
$\begin{align}
& \text{Diff }=\text{money collected - money spent} \\
& =2568-2729 \\
& =-161
\end{align}$
Thus, the difference is of$-161\,\,\text{billion}\,\text{dollars}$. Since it is negative, the budget is a deficit.
From the image above, the number corresponding to $2011$year are,
Money collected was $2304$ billion dollars
Money spent was$3603$ billion dollars
So, the total difference in amount is,
$\begin{align}
& \text{Diff }=\text{money collected - money spent} \\
& =2304-3603 \\
& =-1299
\end{align}$
Thus, the difference is of$-\text{1299}\,\,\text{billion}\,\text{dollars}$. Since it is negative, the budget is a deficit.
So, the total difference in amount is,
$\begin{align}
& \text{Diff }=~-161-\left( -1299 \right) \\
& =-161+1299 \\
& =1138
\end{align}$
Thus, the difference is of$\text{1138}\,\,\text{billion}\,\text{dollars}$.
