Number of shares Closing Prices (per share) Companies outstanding Day T Day T + 1 1 2,000 $30.00 $25.00 2 7,000 55.00 60.00 3 5,000 20.00 25.00 4 4,000 40.00 45.00 Refer to Exhibit 5-1. Compute an unweighted price indicator series, using geometric means. What is the percentage change in the index from Day T to Day T + 1? Assume a base index value of 100 on Day T.