When it comes to wage growth, the measure matters. Despite the importance of matching the statistic to the economic question you want to answer, the various indicators of wage growth are not always put to their best uses.

Thomas Klier (pictured) and James Rubenstein explore how, under NAFTA, Mexico has become an integral part of North America’s motor vehicle industry. The authors track the dramatic increase in Mexico’s auto production and exports over the past 20-plus years.