The New York Times piece I posted about earlier today implies that the gender pay gap has stopped narrowing in the United States. In aggregate terms this is not the case - as the accompanying picture shows. The unadjusted median hourly pay gap continued to close through the late 1980s and early 1990s, reaching a low of 20.2% in 2003 compared with 25.0% in 1993. (Although the pay gap did widen a little in 2004 and 2005, to 20.4% and 20.6% respectively).
But when one adjusts the raw numbers for changing employee characteristics, especially education, the picture looks more bleak - suggesting little change in the gender pay gap since the early 1990s.
This chart comes from a very useful website on the End of the Gender Revolution?, maintained by David A. Cotter (Union College), Joan M. Hermsen (University of Missouri) and Reeve Vanneman (University of Maryland). The site also makes available most of the time series data used for the charts in Excel spreadsheets, updated to 2005. Recommended.