The graph is a bar chart titled "Willingness to Pay for Four Month Earlier COVID Vaccination." The y-axis ranges from zero to 60 percent and plots the share of respondents who indicated that they would pay the corresponding fee to receive the COVID-19 vaccination four months early. The x-axis, which ranges from $50 to $1,000, represents the hypothetical out-of-pocket fee. Respondent answers are shown separately for people ages 18–39, 40–64, and 65 and older. In general, the share of respondents who would accept early vaccination falls as the out-of-pocket fee increases. People ages 65 and older would pay a higher fee at all fee levels except when charged $1,000, which about 19 percent of people ages 18–39 would pay vs 11 percent of people ages 65 and older. Source: Researchers' calculations using data from online discrete choice survey experiments.