Since 1994, OICA compiles worldwide data on automobile production, sales, registrations, trade, and other industry activities.  Also data on vehicle fleets, in terms of number of vehicles on the road, are published regularly (though not on an annual basis).  These data are compiled under the leadership of experts at the French association CCFA and are based on a variety of sources, including data from OICA members and vehicle manufacturers directly whenever possible; thanks to multiple cross-checking processes (including retro-active corrections), the OICA statistical data on production, sales and fleets offer a high accuracy.  The OICA secretariat does not have any additional data compared to those published on the OICA web site.