You want to form a price-weighted technology stock index using Apple, Google, and Yahoo.
Apple's adjusted closing price for 2016 is $115.82 and for 2015 is $105.26; Google's adjusted closing price for 2016 is $771.82 and for 2015 is $758.88;
Yahoo's adjusted closing price for 2016 is $38.67 and for 2015 is $33.26. What is the annual return for your price-weighted technology stock index for 2016?