Where have all the people gone?

According to da papa in November;

4.5 percent fewer passengers left Louis Armstrong New Orleans International Airport on commercial domestic flights and 8.2 percent fewer arrived.

That seems to indicate more people left than came originally or returned. If traffic was merely down then the numbers should be nearly equal.

According to Airport Statistics for November 2008 318,453 passengers enplaned 304,819 passengers deplaned, a difference of 13,634.

Year to date 3,648,424 deplaned 3,654,010 enplaned a difference of 5586.

Where are they going?

I wonder where everybody went. These statistics show that until November more passengers arrived in New Orleans than left.