1 Children aged 7-10 years of age who have not been fully vaccinated. 2  Children (aged 11 years and older) and adults who did not get the Tdap should receive the vaccine followed by a tetanus and diphtheria (Td) booster every 10 years. Children (aged 11 years and older) and adults who did not get the Tdap should receive the vaccine followed by a tetanus and diphtheria (Td) booster every 10 years. 2  Adults who have never received Tdap.
US GDP as % of World GDP: US GDP as % of World GDP is at 24.32%, compared to 22.12% last year. This is lower than the long term average of 29.39%. US GDP as % of World GDP Chart.
With a combined population of over 508 million inhabitants, or 7.3% of the world population, the EU in 2014 generated a nominal gross domestic product (GDP) of 18.495 trillion US dollars, constituting approximately 24% of global nominal GDP and 17% when measured in terms of purchasing power parity.