Latin America is the subregion of the Americas comprising those countries where Romance languages are spoken, primarily Spanish and Portuguese. It consists of twenty two nations which cover an area that stretches from the southern border of the United States to the southern tip of South America, including the Caribbean. Latin America has an area of approximately 19,197,000 km2 (7,412,000 sq mi), almost 13% of the earth''s land surface area. As of 2013, its population was estimated at more than 604 million and in 2014, LA has a combined nominal GDP of 5,573,397 million USD (almost equal to those of the UK and France combined), and a GDP PPP of 7,531,585 million USD (larger than those of India, and Japan and the UK combined). The term "Latin America" was first used in 1861 in La revue des races Latines, a magazine "dedicated to the cause of Pan-Latinism".