The Average annual return on the S&P 500 from 1996-2005 is?

\begin{tabular}{|cc|c|c|} \hline Year-end & & S\&P 500 Realized Return & IBM Realized Return \\ \hline & 1996 & 23.30% & 46.30% \\ \hline & 1997 & 24.70% & 26.70% \\ \hline & 1998 & 30.40% & 86.90% \\ \hline \hline 73 & 1999 & 9.00% & 23.10% \\ \hline \hline 75 & 2000 & 2.00% & 0.20% \\ \hline \hline & 2001 & 17.30% & 3.20% \\ \hline \hline \end{tabular} The average annual return on the S\&P 500 76 from 1996 to 2005 is