5. Looking at Figure 4.5, describe the trend in net equity financing in the United States during the last 35 years. What does this say about the use of equity financing in U.S. corporations? 6. Looking at Figure 4.6, describe the trend in gross public equity issues and IPOs in the United States during the last 35 years. How do you explain this trend given what we observe in Figure 4.5? Explain