Growth Domestic Product of Nations (2018) :

Quoting from wiki source :

Gross domestic product (GDP) is a monetary measure of the market value of all final goods and services produced in a period (quarterly or yearly) or income.

There are two ‘types’ of calculated GDP :

GDP by Nominal, in US$.

GDP by Purchasing Power Parity (PPP), in International Dollar.

The difference is as follows :

Nominal GDP estimates are commonly used to determine the economic performance of a whole country or region, and to make international comparisons. Nominal GDP 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.

Data Sources:

Read about International Dollar here.

How To Use :

Bubble chart : the larger the size, the greater the GDP value, the smaller the size, the smaller the value.

Country bubbles have grey stroke, while bubbles represent financial bodies such as the European Union has black stroke.

All bubbles can be dragged and has tooltip.

Controls : as a rule of thumb, you can simply play with the various available top controls to figure out their use. The circle legends lined up as vertical row on the right can be clicked to choose certain sub-set of the bubbles (for example, click the blue ‘Asia’ circle legend to choose the continent)

Depends on the controls, the legends may display a slider.

Detailed explanation about the controls is as follow :

Detailed controls explanation :