Gross domestic product
Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced in a period of time, often annually 
GDP (nominal) per capita does not, however, reflect differences in the cost of living and the inflation rates of the countries; therefore using a basis of GDP per capita at purchasing power parity (PPP) is arguably more useful when comparing differences in living standards between nations.
List of North American countries by GDP (nominal)
Some countries/regions may have citizens which are on average wealthy. These countries/regions could appear in this list as having a small GDP. This would be because the country/region listed has a small population, and therefore small total economy; the GDP is calculated as the population times market value of the goods and services produced per person in the country.