The percentage of American workers in unions was constant at 11.3% from 2012 to 2013, new data from the Bureau of Labor Statistics show. In 1983, the first year the BLS started collecting this data,  that number was 20.1%.

The rate of unionization among public-sector workers is five times higher than for private-sector workers, at 35.3% and 6.7%, respectively. In terms of occupations, education, training, library, and law-enforcement/first-reponse workers have the highest unionzation rate at 35.3%. Farming, fishing, and forestry workers have the lowest unionization rates at just 2.1%. There's also a very strong geographical split in unionization:

Here's the BLS:

30 states and the District of Columbia had union membership rates below that of the U.S. average, 11.3 percent, while 20 states had higher rates. All states in the Middle Atlantic and Pacific divisions reported union membership rates above the national average, and all states in the East South Central and West South Central divisions had rates below it.

In just three states -- New York, Alaska, and Hawaii -- is union membership above 20%. Washington State just misses the cut at 18.9%. New York has the highest membership rate in the country at 24.4%.