Apple is the world's largest information technology company by revenue, the world's largest technology company bytotal assets, and the world's second-largest mobile phone manufacturer. In November 2014, in addition to being the largest publicly traded corporation in the world by market capitalization, Apple became the first U.S. company to be valued at over US$700 billion. The company employs 115,000 permanent full-time employees as of July 2015and maintains 478 retail stores in seventeen countries as of March 2016. It operates the online Apple Store and iTunes Store, the latter of which is the world's largest music retailer. There are over one billion actively used Apple products worldwide as of March 2016. Apple's worldwide annual revenue totaled $233 billion for the fiscal year ending in September 2015. To put this into perspective this revenue generation accounts for approximately 1.25% of the total United States GDP.