Recently released 2016 survey shows a decline in ISO 9001 certifications in the United States of America.
USA and Canada peaked in the number of certifications in the year 2005/2006, and a general declining trend is seen in the number of certificated after that.
Mexico has shown a gradual increase in the number of certificates.
Summary and the full survey data is available at https://www.iso.org/the-iso-survey.html