11. We've always thought our principal market was the business users of open-standard software products. 12. BA said increased demand by summer travelers should help fill seats in its principal markets . 13. It was launched in November 2006, with deliveries beginning in principal markets in January 2007. 14. Principal markets include the Middle East and East Asia.15. In the mid-century Pittsburgh was the principal market . 16. Newport Pagnell, established early in the 10th century, was the principal market town for the area. 17. Cybercom s principal market is the Nordic region, with established operations in Sweden, Finland and Denmark. 18. From 1958-59 the USA surpassed the United Kingdom as the principal market for Australian beef exports. 19. Principal markets ( in order of volume ) were the Netherlands, Germany, Norway, France and Sweden.20. Tupperware attributes the drop to sluggish economic growth in its principal market in the region : Germany.