Calculate the unweighted index (geometric mean) for Dec 31, 2004. Assume a base index value of 100. The base year is Dec 31, 2003. 31-Dec- 31-Dec- 31-Dec- 31-Dec- 03 04 04 03 Stock Price Shares Price Shares W $ 75.00 10000 $79 10000 $150.00 5000 $155 5000 Y $ 25.00 20000 $24 20000 N $ 40.00 25000 $44 25000