The Following List Shows the Percentage of Aging Population (Residents

The following list shows the percentage of aging population (residents of age 65 and older) in each of the 50 states in 1990 and 2000.
2000
$$\begin{array} { l } 6,9,10,10,10,11,11,11,11,11 , \\11,11,12,12,12,12,12,12,12,12 , \\12,12,12,13,13,13,13,13,13,13 , \\13,13,13,13,13,13,13,14,14,14 , \\14,14,14,14,15,15,15,15,16,18\end{array}$$
1990
$$\begin{array} { l } 4,9,10,10,10,10,10,11,11,11 , \\11,11,11,11,11,12,12,12,12,12 , \\12,13,13,13,13,13,13,13,13,13 , \\13,13,13,13,13,14,14,14,14,14 , \\14,14,14,15,15,15,15,15,15,18\end{array}$$
What was the actual percentage of states whose aging population in 1990 was within two standard deviations of the mean Round your answer to one decimal place if necessary.

A) 96%
B) 95%
C) 97%
D) 75%
E) 86%