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.
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.