sufficiency" and "Sufficiency" level.

GaWC published city classifications in 1998, 2000, 2004, 2008, 2010, 2012, 2016, 2018, 2020, 2022, and 2024. The 2004 rankings added several new indicators while continuing to rank city economics more heavily than political or cultural factors. The 2008 roster, similar to the 1998 version, is sorted into categories of Alpha world cities (with four sub-categories), Beta world cities (three sub-categories), Gamma world cities (three sub-categories), and additional cities with High sufficiency or Sufficiency