The percentage of workers who were union members hit an all-time low last year nationwide. But in Pennsylvania, where the percentage of union members is higher than the national average, rates are up since 2022, according to new data released by the Bureau of Labor Statistics last week. U.S. union membership rate dropped to 1 in 10 workers in 2023 compared to around 2 in 10 workers in 1983 when BLS first started recording this data. In Pennsylvania, the rate of union membership increased in 2023 from 12.7% to 12.9%, placing it in a group of 19 states that had higher rates than the national ave…