Home/American Shipper/OECD averages 1% of GDP on infrastructure spend American Shipper OECD averages 1% of GDP on infrastructure spend FreightWaves Staff · Thursday, July 11, 2013 Facebook Twitter Pinterest LinkedInWhile the 34 countries in the Organization for Economic Cooperation spend an average of 1 percent of GDP on transportation infrastructure, that percentage hasn’t changed since 1995, according to recent ITF data.