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.
Gross Domestic Product (GDP) in purchasing power parity (PPP) in 2006 was estimated at US $1.134 trillion, and GDP per capita in PPP at US $10,600. The service sector is the largest component of GDP at 70.5%, followed by the industrial sector at 25.7% (2006 est.). Agriculture represents only 3.9% of GDP (2006 est.).