Identify the years in which there was a budget surplus.

\begin{tabular}{|l|l|l|}
\hline
Year & Revenue & Expenditure \\
\hline
2001 & \[tex]$8 trillion & \$[/tex]6 trillion \\
\hline
2002 & \[tex]$5 trillion & \$[/tex]7 trillion \\
\hline
2003 & \[tex]$8 trillion & \$[/tex]10 trillion \\
\hline
2004 & \[tex]$9 trillion & \$[/tex]7 trillion \\
\hline
2005 & \[tex]$15 trillion & \$[/tex]18 trillion \\
\hline
2006 & \[tex]$8 trillion & \$[/tex]10 trillion \\
\hline
2007 & \[tex]$6 trillion & \$[/tex]4 trillion \\
\hline
2008 & \[tex]$2 trillion & \$[/tex]4 trillion \\
\hline
2009 & \[tex]$7 trillion & \$[/tex]4 trillion \\
\hline
2010 & \[tex]$5 trillion & \$[/tex]9 trillion \\
\hline
\end{tabular}



Answer :

To determine the years in which there was a budget surplus, we need to identify when the federal government's revenue exceeded its expenditures for each year from 2001 to 2010. A budget surplus occurs when the revenue is greater than the expenditure.

Let's look at each year individually:

1. Year 2001:
- Revenue: [tex]$8 trillion - Expenditure: $[/tex]6 trillion
- Revenue > Expenditure: [tex]$8 trillion > $[/tex]6 trillion
- Conclusion: Budget surplus

2. Year 2002:
- Revenue: [tex]$5 trillion - Expenditure: $[/tex]7 trillion
- Revenue < Expenditure: [tex]$5 trillion < $[/tex]7 trillion
- Conclusion: No budget surplus

3. Year 2003:
- Revenue: [tex]$8 trillion - Expenditure: $[/tex]10 trillion
- Revenue < Expenditure: [tex]$8 trillion < $[/tex]10 trillion
- Conclusion: No budget surplus

4. Year 2004:
- Revenue: [tex]$9 trillion - Expenditure: $[/tex]7 trillion
- Revenue > Expenditure: [tex]$9 trillion > $[/tex]7 trillion
- Conclusion: Budget surplus

5. Year 2005:
- Revenue: [tex]$15 trillion - Expenditure: $[/tex]18 trillion
- Revenue < Expenditure: [tex]$15 trillion < $[/tex]18 trillion
- Conclusion: No budget surplus

6. Year 2006:
- Revenue: [tex]$8 trillion - Expenditure: $[/tex]10 trillion
- Revenue < Expenditure: [tex]$8 trillion < $[/tex]10 trillion
- Conclusion: No budget surplus

7. Year 2007:
- Revenue: [tex]$6 trillion - Expenditure: $[/tex]4 trillion
- Revenue > Expenditure: [tex]$6 trillion > $[/tex]4 trillion
- Conclusion: Budget surplus

8. Year 2008:
- Revenue: [tex]$2 trillion - Expenditure: $[/tex]4 trillion
- Revenue < Expenditure: [tex]$2 trillion < $[/tex]4 trillion
- Conclusion: No budget surplus

9. Year 2009:
- Revenue: [tex]$7 trillion - Expenditure: $[/tex]4 trillion
- Revenue > Expenditure: [tex]$7 trillion > $[/tex]4 trillion
- Conclusion: Budget surplus

10. Year 2010:
- Revenue: [tex]$5 trillion - Expenditure: $[/tex]9 trillion
- Revenue < Expenditure: [tex]$5 trillion < $[/tex]9 trillion
- Conclusion: No budget surplus

Based on the analysis of each year, the years in which there was a budget surplus are:

- 2001
- 2004
- 2007
- 2009

So, the years with a budget surplus are 2001, 2004, 2007, and 2009.