The following table shows the average values of the stock market as measured by the Dow Jones Industrial Average during the second half of 2017:

Date                     Closing Price
2017–07.......................21581.25
2017–08.......................21914.08
2017–09.......................22173.41
2017–10.......................23036.24
2017–11.......................23557.93
2017–12.......................24545.38