The Table Shows the Numbers $a _ { n }$ (In Thousands)of Residents from 2002 Through 2007

The table shows the numbers $a _ { n }$ (in thousands) of residents from 2002 through 2007. $$\begin{array} { | c | l | } \hline & \text { Number of residents, } \\&.\\{ \text { Year } }& a _ { n } \\&.\\\hline 2002 & 640 \\\hline 2003 & 655 \\\hline 2004 & 670 \\\hline\end{array}$$ $$\begin{array} { | l | l | } \hline 2005 & 670 \\\hline 2006 & 683 \\\hline 2007 & 699 \\\hline\end{array}$$
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Find the first differences of the data shown in the table.

A) $15,15,0,13,16$
B) $15,13,0,15,16$
C) $16,0,15,13,15$
D) $0,15,0,13,16$
E) $13,13,15,0,16$