The 2013 report also estimates that a limited agreement focused solely on tariffs would lead to EU GDP growth of €24 billion by 2027 and growth of €9 billion in the US. Equally among those affected, the most optimistic GDP growth estimates would translate into an „additional annual disposable income for a family of four“ of „€545 in the EU“ and „€655 in the US“.  Beyond TTIP, a broader „transatlantic free trade area“ has been postulated. [by whom?] [Citation required] This could include on the U.S. side the other members of the North American Free Trade Area (Canada and Mexico); and, on the European side, the members of the European Free Trade Association (Iceland, Norway, Switzerland and Liechtenstein). .