According to figures from the U.S. Department of Transportation, the number of border crossings between 2003 and 2012 fell by 35%, from 246 million in 2003 to 159 million border crossings in 2012 United States Department of Transportation [USDOT], 2012.
De acuerdo a las cifras del Departamento de Transporte de ese país, entre 2003 y 2012, el número de cruces fronterizos cayó 35%, de 246 millones de personas cruzando la frontera en 2003, a 159 millones en 2012 United States Department of Transportation [USDOT], 2012.