NOT!!!
It includes the countries in Central America
http://www.uen.org/utahlink/activities/view_activity.cgi?activity_id=3795
http://en.wikipedia.org/wiki/List_of_North_American_countries_by_GDP_PPP
http://www.travour.com/north-america/countries-in-north-america.html
CONTINENTS OF THE WORLD
CONTINENTS (by size)
#1 Asia - (44,579,000 sq km)
#2 Africa - (30,065,000 sq km)
#3 North America - (24,256,000 sq km)
#4 South America - (17,819,000 sq km)
#5 Antarctica - (13,209,000 sq km)
#6 Europe - (9,938,000 sq km)
#7 Australia/Oceania - (7,687,000 sq km)
If you look at the list, Central America is not a "CONTINENT"!!