Source: Bureau of Labor Statistics; Image: Lam Thuy Vo

Over at NPR’s Planet Money Blog, reporter Lam Thuy Vo takes a quick look at some of the latest statistics from the Bureau of Labor to look at how women’s role in the economy (at least, on the employment side) has changed since 1972—coincidentally, the year the House and Senate both passed the Equal Rights Amendment, which would have mandated equal pay for equal work, but was not ratified by the states within the federal 10-year deadline.

Despite lacking legal backup in the fight against sex discrimination, women have certainly made strides in workforce participation in these forty years. They’ve gone from just 36.1% of the American workforce in 1972 to almost an even split at 49.3% in 2012. Vo further breaks out the gender division in workers across sectors for an interesting look at changing economies. It’s certainly worth a visit to look at not only how women’s roles in certain job categories have changed, but also how the proportion of those jobs in the American economy as a whole have changed in just four decades.