Canada maintained the largest share of purchases, dropping from 23% in 2013 to 19% in 2014; however, China held the lead in dollar volume, purchasing an estimated $22 billion with an average sale cost of $590,826.
China was also the fastest growing source of transactions, now accounting for 16% of all purchases, up 4% from last year. Mexico ranked third with 9% of sales and India and the U.K. both accounted for 5%.
See this link at the National Association of Realtors® website: http://www.realtor.org/reports/profile-of-international-home-buying-activity