agriculture: 1.2% industry: 21.9% services: 76.9% (2009 est.) https://www.cia.gov/library/publications/the-world-factbook/geos/countrytemplate_us.html
Depends on how you want the US to exist as. If you want us to be completely dependent on ourselves then.. Agri 10% Industry 45% Services 45% But actually the wealthiest countries that have the highest standard of living seem to have very very high services. Luxomburg where the average income is about $80k agriculture: 0.4% industry: 13.6% services: 86% In Hong Kong Services represent almost 92% of their GDP and only 8% industry and they are doing about 10 times better than their chinese brothers who only have 46% industry and 42% services. Of course its not always that way. Norways GDP (about 55k income per capita vs our $45k) looks like this. agriculture: 2.1% industry: 39.5% services: 58.3%